chore(deps): update slackapi/slack-github-action action to v1.27.1 #2527

Job	Run time
Generate git short sha / Generate git short sha	2s
Check for changes / Filter	3s
Get current version / Filter	5s
build / build-and-test	1m 29s
build-infrastructure / Build infrastructure for test	18s
Dry run deploy infrastructure / Deploy to test	1m 14s
Dry run deploy apps / Deploy migration job to ${{ inputs.environment }}	0s
Dry run deploy apps / Deploy web-api-eu to test	53s
Dry run deploy apps / Deploy web-api-so to test	42s
Dry run deploy apps / Deploy graphql to test	57s
Dry run deploy apps / Deploy service to test	1m 27s
Dry run deploy apps / Deploy job sync-subject-resource-mappings-job to test	1m 1s
Dry run deploy apps / Deploy job sync-resource-policy-information-job to test	1m 3s
Delete GitHub deployments / Delete GitHub deployments	3s
	9m 17s

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