Bump actions/checkout from 4.2.0 to 4.2.1

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.2.0 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@v4.2.0...v4.2.1)

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

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

.github/workflows/autofix.yaml

@@ -20,7 +20,7 @@ jobs:
     name: Update readme
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4.2.0
+      - uses: actions/checkout@v4.2.1
       - uses: actions/setup-python@v5.2.0
         with:
           python-version: "3.12"

.github/workflows/labels.yaml

@@ -18,7 +18,7 @@ jobs:
     name: Generate extra labels
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4.2.0
+      - uses: actions/checkout@v4.2.1
       - uses: actions/setup-python@v5.2.0
         with:
           python-version: "3.12"

.github/workflows/tests.yaml

@@ -119,7 +119,7 @@ jobs:
       # See: meta_package_manager/test_manager_homebrew.py::TestCask test.
       HOMEBREW_NO_INSTALL_FROM_API: "1"
     steps:
-      - uses: actions/checkout@v4.2.0
+      - uses: actions/checkout@v4.2.1
 
       - name: Python ${{ matrix.python-version }} - Install
         uses: actions/setup-python@v5.2.0