test: upgrade tests should not pick RC versions as starting point (#5… #1

Job	Run time
Skip duplicate runs	4s
smoke test release-* branches when it's a scheduled run	0s
Check changed files	4s
Run linters	2m 29s
Verify API doc is up to date	1m 41s
Verify CRD is up to date	43s
Generate jobs for unit tests	4s
Run govulncheck	48s
Renovate Linter	35s
Run shellcheck linter	5s
Run unit tests (1.27.x)	3m 26s
Run unit tests (1.28.x)	3m 20s
Run unit tests (1.29.x)	3m 21s
Run unit tests (1.30.x)	3m 22s
Run unit tests (1.31.x)	3m 22s
Build containers	27s
Create OLM bundle and catalog	0s
Run OLM scorecard test	0s
Run openshift-preflight test	0s
Run OLM ${{ matrix.test }} test	0s
	23m 51s

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