This pull request updates the CI workflow to use the stable release of Helm v3.19.0 instead of the previous release candidate (v3.19.0-rc.1) across all relevant matrix jobs. This ensures that tests run against the latest stable version of Helm, improving reliability and consistency in the CI process.

CI workflow updates:

• Updated all Helm version references in the matrix strategy from v3.19.0-rc.1 to the stable v3.19.0 in .github/workflows/ci.yaml [1] [2] [3]