Chore(deps): Bump actions/checkout from 4 to 5 (#110558)

* Chore(deps): Bump actions/checkout from 4 to 5

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 5.
- [Release notes](https://github.com/actions/checkout/releases)
- [Commits](https://github.com/actions/checkout/compare/v4...v5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

* remove incorrect comments

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Ashley Harrison <ashley.harrison@grafana.com>

.github/workflows/alerting-update-module.yml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4 # 4.2.2
+        uses: actions/checkout@v5
         with:
           persist-credentials: false
       - name: Check if update branch exists
@@ -60,10 +60,10 @@ jobs:
         run: |
           FROM_COMMIT="${{ steps.current-commit.outputs.from_commit }}"
           TO_COMMIT="${{ steps.latest-commit.outputs.to_commit }}"
-          
+
           # Compare just the length of the shorter hash
           SHORT_TO_COMMIT="${TO_COMMIT:0:${#FROM_COMMIT}}"
-          
+
           if [ "$FROM_COMMIT" = "$SHORT_TO_COMMIT" ]; then
             echo "Current version ($FROM_COMMIT) is already at latest ($SHORT_TO_COMMIT). No update needed."
             exit 0
@@ -157,4 +157,4 @@ jobs:
             {
               "channel": "C076RNRRZ2N",
               "text": "Update alerting module in Grafana ${{ steps.create-pr.outputs.pull-request-url }}"
-            }
+            }