chore(deps): update docker/build-push-action action to v6.8.0 #8183

Job	Run time
publish-asf-ui	49s
publish-asf (ubuntu-latest, generic)	1m 49s
publish-asf (ubuntu-latest, linux-arm)	3m 12s
publish-asf (ubuntu-latest, linux-arm64)	3m 12s
publish-asf (ubuntu-latest, linux-x64)	2m 58s
publish-asf (macos-latest, osx-arm64)	2m 14s
publish-asf (macos-latest, osx-x64)	2m 20s
publish-asf (windows-latest, win-arm64)	5m 2s
publish-asf (windows-latest, win-x64)	4m 46s
release	0s
	26m 22s

Provide feedback