refactor(makefile + ci): rename swamp -> integration #6480

Job	Run time
Markdown Lint	5s
setup	1s
yamllint	5s
hadolint / hadolint	9s
go-ci / setup	1s
go-ci / Go Mod Tidy Check	19s
go-ci / Lint	1m 59s
go-ci / Run Integration Tests	11m 59s
go-ci / Unit Tests Coverage (ubuntu-latest)	3m 19s
go-ci / Run Unit Tests with Race Detector	4m 8s
go-ci / Unit Tests Coverage (macos-latest)	3m 41s
version_bump	0s
goreleaser	0s
	25m 46s

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