feat: Warn when a non-default region is configured #2331

Job	Run time
Run Cargo Udeps	1m 44s
Select target helm repository based on action trigger	2s
Run Clippy	28s
Run Rustfmt	16s
Run RustDoc	1m 5s
Run Cargo Deny (advisories)	46s
Run Cargo Tests	42s
Check if committed Helm charts are up to date	38s
Check if committed README is the one we would render from the available parts	27s
Run Cargo Deny (bans licenses sources)	42s
All tests passed	2s
Package Charts, Build Docker Image and publish them - ubicloud-standard-8-arm	11m 6s
Package Charts, Build Docker Image and publish them - ubuntu-latest	11m 36s
Build and publish manifest list	52s
Run the OpenShift Preflight check on the published images	13s
	30m 39s

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