Add GitHub Enterprise support #7644

Job	Run time
tests (postgres, debian, minio)	15m 46s
tests (postgres, ubi, local)	12m 3s
build-images (ubuntu-24.04, debian)	2m 3s
build-images (ubuntu-24.04-arm, ubi)	3m 2s
tests (postgres, debian, local)	15m 57s
build-images (ubuntu-24.04, ubi)	2m 53s
build-images (ubuntu-24.04-arm, debian)	3m 44s
	55m 28s

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