r/elasticache_serverless_cache: fix modify error using autoflex

[johnsonaj]

Description

When modifying and aws_elasticache_serverless_cache the resource can sometimes throw the following error due all parameters being passed to the update:

% make testacc TESTARGS='-run=TestAccElastiCacheServerlessCache_redisUpdateWithUserGroup' PKG=elasticache

make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.23.3 test ./internal/service/elasticache/... -v -count 1 -parallel 20  -run=TestAccElastiCacheServerlessCache_redisUpdateWithUserGroup -timeout 360m -vet=off
2025/01/16 09:43:53 Initializing Terraform AWS Provider...
=== RUN   TestAccElastiCacheServerlessCache_redisUpdateWithUserGroup
=== PAUSE TestAccElastiCacheServerlessCache_redisUpdateWithUserGroup
=== CONT  TestAccElastiCacheServerlessCache_redisUpdateWithUserGroup
    serverless_cache_test.go:214: Step 2/2 error: Error running apply: exit status 1

        Error: updating ElastiCache Serverless Cache (tf-acc-test-7713555080296793790)

          with aws_elasticache_serverless_cache.test,
          on terraform_plugin_test.tf line 56, in resource "aws_elasticache_serverless_cache" "test":
          56: resource "aws_elasticache_serverless_cache" "test" {

        operation error ElastiCache: ModifyServerlessCache, https response error
        StatusCode: 400, RequestID: fa52f39a-9a6f-4267-b141-dd7372806b81,
        InvalidParameterCombination: Serverless Cache modifications only support
        modifying one field per request.
--- FAIL: TestAccElastiCacheServerlessCache_redisUpdateWithUserGroup (619.41s)
FAIL
FAIL	github.com/hashicorp/terraform-provider-aws/internal/service/elasticache	625.897s
FAIL
make: *** [testacc] Error 1

Relations

Closes #37499
Closes #40461

References

Output from Acceptance Testing

% make testacc TESTARGS='-run=TestAccElastiCacheServerlessCache_redisUpdateWithUserGroup' PKG=elasticache

make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.23.3 test ./internal/service/elasticache/... -v -count 1 -parallel 20  -run=TestAccElastiCacheServerlessCache_redisUpdateWithUserGroup -timeout 360m -vet=off
2025/01/16 09:59:31 Initializing Terraform AWS Provider...
=== RUN   TestAccElastiCacheServerlessCache_redisUpdateWithUserGroup
=== PAUSE TestAccElastiCacheServerlessCache_redisUpdateWithUserGroup
=== CONT  TestAccElastiCacheServerlessCache_redisUpdateWithUserGroup
--- PASS: TestAccElastiCacheServerlessCache_redisUpdateWithUserGroup (532.74s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/elasticache	539.266s

% make testacc TESTARGS='-run=TestAccElastiCacheServerlessCache_' PKG=elasticache

make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.23.3 test ./internal/service/elasticache/... -v -count 1 -parallel 20  -run=TestAccElastiCacheServerlessCache_ -timeout 360m -vet=off
2025/01/16 10:12:47 Initializing Terraform AWS Provider...
--- PASS: TestAccElastiCacheServerlessCache_disappears (416.33s)
--- PASS: TestAccElastiCacheServerlessCache_update (458.97s)
--- PASS: TestAccElastiCacheServerlessCache_tags (463.96s)
--- PASS: TestAccElastiCacheServerlessCache_basicValkey (471.00s)
--- PASS: TestAccElastiCacheServerlessCache_basicRedis (482.76s)
--- PASS: TestAccElastiCacheServerlessCache_redisUpdateWithUserGroup (524.66s)
--- PASS: TestAccElastiCacheServerlessCache_fullValkey (572.70s)
--- PASS: TestAccElastiCacheServerlessCache_fullRedis (624.83s)
--- PASS: TestAccElastiCacheServerlessCache_full (655.87s)
--- PASS: TestAccElastiCacheServerlessCache_updatesc (682.26s)
--- PASS: TestAccElastiCacheServerlessCache_update_RedisToValkey (777.39s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/elasticache	783.887s

[github-actions]

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[ewbankkit]

LGTM 🚀.

% make testacc TESTARGS='-run=TestAccElastiCacheServerlessCache_' PKG=elasticache ACCTEST_PARALLELISM=3
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.23.3 test ./internal/service/elasticache/... -v -count 1 -parallel 3  -run=TestAccElastiCacheServerlessCache_ -timeout 360m -vet=off
2025/01/16 14:40:28 Initializing Terraform AWS Provider...
=== RUN   TestAccElastiCacheServerlessCache_basicRedis
=== PAUSE TestAccElastiCacheServerlessCache_basicRedis
=== RUN   TestAccElastiCacheServerlessCache_basicValkey
=== PAUSE TestAccElastiCacheServerlessCache_basicValkey
=== RUN   TestAccElastiCacheServerlessCache_full
=== PAUSE TestAccElastiCacheServerlessCache_full
=== RUN   TestAccElastiCacheServerlessCache_fullRedis
=== PAUSE TestAccElastiCacheServerlessCache_fullRedis
=== RUN   TestAccElastiCacheServerlessCache_redisUpdateWithUserGroup
=== PAUSE TestAccElastiCacheServerlessCache_redisUpdateWithUserGroup
=== RUN   TestAccElastiCacheServerlessCache_fullValkey
=== PAUSE TestAccElastiCacheServerlessCache_fullValkey
=== RUN   TestAccElastiCacheServerlessCache_update
=== PAUSE TestAccElastiCacheServerlessCache_update
=== RUN   TestAccElastiCacheServerlessCache_updatesc
=== PAUSE TestAccElastiCacheServerlessCache_updatesc
=== RUN   TestAccElastiCacheServerlessCache_update_RedisToValkey
=== PAUSE TestAccElastiCacheServerlessCache_update_RedisToValkey
=== RUN   TestAccElastiCacheServerlessCache_disappears
=== PAUSE TestAccElastiCacheServerlessCache_disappears
=== RUN   TestAccElastiCacheServerlessCache_tags
=== PAUSE TestAccElastiCacheServerlessCache_tags
=== CONT  TestAccElastiCacheServerlessCache_basicRedis
=== CONT  TestAccElastiCacheServerlessCache_update
=== CONT  TestAccElastiCacheServerlessCache_fullRedis
--- PASS: TestAccElastiCacheServerlessCache_update (394.73s)
=== CONT  TestAccElastiCacheServerlessCache_disappears
--- PASS: TestAccElastiCacheServerlessCache_fullRedis (511.82s)
=== CONT  TestAccElastiCacheServerlessCache_tags
--- PASS: TestAccElastiCacheServerlessCache_basicRedis (533.41s)
=== CONT  TestAccElastiCacheServerlessCache_fullValkey
--- PASS: TestAccElastiCacheServerlessCache_disappears (373.02s)
=== CONT  TestAccElastiCacheServerlessCache_update_RedisToValkey
=== CONT  TestAccElastiCacheServerlessCache_redisUpdateWithUserGroup
--- PASS: TestAccElastiCacheServerlessCache_tags (367.54s)
--- PASS: TestAccElastiCacheServerlessCache_fullValkey (385.74s)
=== CONT  TestAccElastiCacheServerlessCache_updatesc
--- PASS: TestAccElastiCacheServerlessCache_redisUpdateWithUserGroup (535.02s)
=== CONT  TestAccElastiCacheServerlessCache_full
--- PASS: TestAccElastiCacheServerlessCache_update_RedisToValkey (693.59s)
=== CONT  TestAccElastiCacheServerlessCache_basicValkey
--- PASS: TestAccElastiCacheServerlessCache_updatesc (617.17s)
--- PASS: TestAccElastiCacheServerlessCache_full (386.93s)
--- PASS: TestAccElastiCacheServerlessCache_basicValkey (407.56s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/elasticache	1874.555s