chore(deps-dev): bump apollo-server-core from 3.12.0 to 3.12.1 #6426

Job	Run time
lint (18.x)	3m 1s
test-formio (18.x)	2m 42s
test-core (18.x)	3m 33s
test-graphql (18.x)	3m 46s
test-integration (ubuntu-latest, 16.x)	3m 21s
test-integration (ubuntu-latest, 18.x)	3m 34s
test-integration (ubuntu-latest, 19.x)	4m 30s
test-integration (macos-latest, 18.x)	6m 3s
test-integration (windows-latest, 18.x)	9m 17s
test-platform (18.x)	2m 37s
test-security (18.x)	2m 52s
test-orm (18.x)	2m 44s
test-specs (18.x)	2m 39s
test-third-parties (18.x)	2m 49s
deploy-packages	0s
publish-docs	0s
	53m 28s

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