Bump actions/checkout from 4.1.7 to 4.2.1

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.1.7 to 4.2.1.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4.1.7...v4.2.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/zoo_django_actions.yml

@@ -40,7 +40,7 @@ jobs:
 
 
     steps:
-    - uses: actions/checkout@v4.1.7
+    - uses: actions/checkout@v4.2.1
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/[email protected]
       with:
@@ -101,7 +101,7 @@ jobs:
         ALLOWED_HOSTS: localhost
         GITHUB_WORKFLOW: True
         MODE: workflow
-    - uses: actions/checkout@v4.1.7
+    - uses: actions/checkout@v4.2.1
     - name: Build the images and start the containers
       run: |
         export GITHUB_WORKFLOW=True