Remove dots in helm release name

[ciarams87]

Problem: Helm tests are failing when there is a dot in the branch or tag name, as this is used for the helm release name which is not allowed

Solution: Replace any dots in the release name with dashes

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork