Unskip the `l1-main` test #3409

Job	Run time
prerequisites	2m 33s
Lint pkg	1m 18s
test_integrations (stack-reference)	1m 9s
test_integrations (stack-transformation)	1m 16s
go-tests	8m 0s
test_templates	3m 14s
examples (aws-java-eks-minimal)	2m 10s
examples (aws-java-webserver)	2m 1s
test_integrations (adopt-into-component)	1m 7s
examples (aws-native-java-s3-folder)	1m 56s
test_integrations (rename)	1m 16s
examples (azure-java-appservice-sql)	2m 4s
test_integrations (rename-component)	1m 19s
examples (azure-java-static-website)	1m 45s
test_integrations (rename-component-and-child)	1m 19s
examples (gcp-java-gke-hello-world)	2m 4s
test_integrations (retype-component)	1m 24s
examples (kubernetes)	1m 39s
test_integrations (retype-parents)	1m 13s
examples (minimal)	1m 39s
examples (minimalsbt)	1m 54s
examples (random)	1m 56s
	44m 16s

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