test: test all supported engines on their oldest supported releases #1218

Job	Run time
call-lint / golangci	1m 7s
call-styles-check / styles-check	10s
call-test / Go unit tests (ubuntu-latest)	3m 17s
call-test / Go unit tests (windows-latest)	5m 1s
call-mkdocs-check / mkdocs-check	5s
call-test / Go unit tests (macos-latest)	1m 9s
call-test / test-bsd (openbsd, x86-64, 7.5)	4m 50s
call-swagger-check / swagger-check	19s
call-e2e / Tests	1m 14s
call-gorelease / goreleaser	3m 7s
call-buildx / Build Docker	23s
call-buildx-alpine / Build Docker	25s
	21m 7s

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