fix: Use correct regex for RC-tags #2165

Job	Run time
Check if committed README is the one we would render from the available parts	27s
Check if committed Helm charts are up to date	50s
Run Cargo Deny (advisories)	41s
Run Clippy	27s
Run Cargo Deny (bans licenses sources)	38s
Run RustDoc	1m 5s
Run Rustfmt	12s
Run Cargo Tests	32s
Run Cargo Udeps	1m 26s
Select target helm repository based on action trigger	1s
All tests passed	1s
Package Charts, Build Docker Image and publish them - ubuntu-latest	10m 47s
Package Charts, Build Docker Image and publish them - ubicloud-standard-8-arm	9m 41s
Build and publish manifest list	52s
Run the OpenShift Preflight check on the published images	11s
	27m 51s

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