ci: aggregate checks with guardian (#20635) #1076

Job	Run time
release-version	1m 41s
build-packages / build-packages (lightning)	18s
build-packages / build-packages (fabric)	19s
build-packages / build-packages (pytorch)	20s
build-packages / merge-artifacts	5s
upload-packages	0s
pre-publish-packages	0s
publish-packages	0s
legacy-checkpoints / create-legacy-ckpts	2m 50s
signaling	0s
legacy-checkpoints / add-ckpt-test	0s
	5m 33s

Provide feedback