github: Add hl-ci- as a branch name prefix

[joaquimrocha]

Summary

This PR updates the branches used in CI workflows so they have the hl-ci- prefix, which doesn't get protected by the kubernetes branch policies, thus allowing us to delete/update them easily.

Notes for the Reviewer

No test needed since this will be related to the release. Just double check if the logic makes sense and there are no typos or things like that.

[Copilot]

Pull Request Overview

This PR prefixes CI workflow branch names with hl-ci- to bypass Kubernetes branch protection and simplify cleanup.

• Updated branch creation, push, and PR commands to use hl-ci- prefixes in multiple workflows
• Introduced BRANCH_NAME variables for consistency in minikube and homebrew scripts
• Adjusted echo URLs to reference new branch names

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
.github/workflows/pr-to-update-winget.yml	Prefixed branch names and PR URL with hl-ci-
.github/workflows/pr-to-update-minikube.yml	Added BRANCH_NAME var and updated all branch operations
.github/workflows/pr-to-update-homebrew.yml	Added BRANCH_NAME var and updated all branch operations
.github/workflows/pr-to-update-choco.yml	Prefixed branch names and PR URL with hl-ci-
.github/workflows/pr-to-update-chart.yml	Prefixed BRANCH assignment with hl-ci-

Comments suppressed due to low confidence (3)

.github/workflows/pr-to-update-chart.yml:53

• Quote $BRANCH in the grep command (grep -q "$BRANCH") to avoid potential word-splitting or unexpected pattern matching.

          if git branch -l | grep -q $BRANCH; then

.github/workflows/pr-to-update-chart.yml:52

• To prevent push failures when a remote branch already exists, add logic to delete origin/$BRANCH (e.g., git push origin --delete "$BRANCH") before creating the new branch.

          BRANCH=hl-ci-update_chart_headlamp_$LATEST_HEADLAMP_TAG

.github/workflows/pr-to-update-choco.yml:103

• The double echo causes the literal echo "..." to be printed. Remove the extra echo so the URL is output directly (e.g., echo "https://...").

          echo echo "https://github.com/kubernetes-sigs/headlamp/pull/new/hl-ci-choco-update-$LATEST_HEADLAMP_TAG"

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: joaquimrocha, skoeva

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