CD/CI

github-actions(deps): bump docker/build-push-action from 3 to 6 #435

Job	Run time
Commit Stage / Architecture Checks (8.0)	21s
Commit Stage / Coding Standard (8.0)	35s
Commit Stage / Validate Composer (8.0)	17s
Commit Stage / SA (psalm) (8.0)	29s
Commit Stage / Rector (maintenance) (8.0)	43s
Commit Stage / SA (phpstan) (8.0)	35s
Commit Stage / Unit test (core) 8.0	25s
Commit Stage / Unit test (core) 8.1	30s
Acceptance Stage / App preconditions checks (8.0)	1m 2s
Acceptance Stage / Show workflow info	0s
Acceptance Stage / Functional test 8.0	1m 29s
Acceptance Stage / Integration test 8.0	56s
Publish Metrics / Publish metrics \| Codecov	16s
	7m 38s

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