renovate: Update actions/checkout action to v6 (#74)

renovate[bot] · web-flow · commit 838df1f0d938 · 2025-12-20T13:18:28.000Z
Co-authored-by: renovate[bot] &lt;29139614+renovate[bot]@users.noreply.github.com&gt;
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
@@ -17,7 +17,7 @@ jobs:
 
     steps:
 
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v6
