Changes

ci(tekton): extend branch regex for linux builds (#4332)

This pull request updates the branch matching logic in the Tekton
trigger configuration to support additional release branch naming
patterns, specifically those that include date and version information.

**Branch filtering improvements:**

* Updated the regular expression in
`git-push-branch-build-community-linux.yaml` to allow release branch
names with optional date and version suffixes (e.g.,
`release-6.1-20240612-v6.1.0`). This makes the trigger compatible with
more complex release branch naming conventions.
 (commit: eb1285c)