Bump actions/checkout from 4 to 5 (#228)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
     name: ${{ matrix.name }}
     steps:
       - name: Check out repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - uses: actions/setup-python@v5
         with:
           python-version-file: '.python-version'