Polish backend for soft-required validation #14254

Job	Run time
Run the Django test suite	7m 39s
Build and check documentation	1m 4s
Run the Django test suite in reverse	5m 14s
End-to-end tests, chromium	13m 30s
Set up docker build 'dynamic' env variables	1s
End-to-end tests, firefox	17m 12s
End-to-end tests, webkit	12m 9s
docker_build (extensions, token_exchange,prefill_haalcentraalhr, all-extensions-) / Build image	2m 47s
docker_build (production) / Build image	2m 41s
Scan docker image	2m 6s
Simulate upgrading instances (2.7.4)	1m 33s
Simulate upgrading instances (2.7.8)	1m 20s
Check for unexepected OAS changes	5s
Generate SDKs from OAS	35s
Validate OAS	14s
Generate Postman collection from OAS	10s
Push Docker image	0s
update-docker-readme	0s
	1h 8m 20s

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