test: test all supported engines on their oldest supported releases #1217

Job	Run time
call-mkdocs-check / mkdocs-check	3s
call-lint / golangci	59s
call-swagger-check / swagger-check	17s
call-styles-check / styles-check	10s
call-test / test-bsd (openbsd, x86-64, 7.5)	4m 31s
call-test / Go unit tests (ubuntu-latest)	1m 33s
call-test / Go unit tests (windows-latest)	6m 15s
call-test / Go unit tests (macos-latest)	1m 25s
call-e2e	0s
call-gorelease	0s
call-buildx	0s
call-buildx-alpine	0s
	15m 13s

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