feat!: add a signalling mechanism for coordinated upgrades #2644

Job	Run time
goreleaser-check	4s
branch_name	1s
lint / golangci-lint	1m 7s
lint / yamllint	12s
markdown-linter / markdown-lint	9s
markdown-linter / markdown-link-check	1m 38s
test / test-short	1m 5s
test / test	8m 1s
test / test-coverage	3m 1s
test / test-race	6m 9s
test / test-fuzz	12m 33s
lint / hadolint / hadolint	7s
version_bump	3s
goreleaser	0s
	34m 10s

Provide feedback