Bump actions/checkout from 4 to 5 (heroku#1640)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 5.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/check_changelog.yml

@@ -13,7 +13,7 @@ jobs:
     if: (!contains(github.event.pull_request.labels.*.name, 'skip changelog'))
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Check that CHANGELOG is touched
         run: |
           git fetch origin ${{ github.base_ref }} --depth 1 && \

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Run ShellCheck bin top level
         run: |
             # All bash files that don't end in '.rb'
@@ -36,7 +36,7 @@ jobs:
         RSPEC_RETRY_RETRY_COUNT: 1
       steps:
         - name: Checkout
-          uses: actions/checkout@v4
+          uses: actions/checkout@v5
         - name: Install Ruby and dependencies
           uses: ruby/setup-ruby@v1
           with:

.github/workflows/hatchet_app_cleaner.yml

@@ -19,7 +19,7 @@ jobs:
       HEROKU_DISABLE_AUTOUPDATE: 1
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Install Ruby and dependencies
         uses: ruby/setup-ruby@v1
         with: