chore(deps): update actions/checkout action to v6

.github/workflows/python-app.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Install uv
       uses: astral-sh/setup-uv@v6
       with:

pyproject.toml

@@ -40,7 +40,7 @@ csv-metadata-quality = 'csv_metadata_quality.__main__:main'
 
 # See: https://docs.astral.sh/uv/concepts/build-backend/
 [build-system]
-requires = ["uv_build>=0.9.11,<0.10.0"]
+requires = ["uv_build>=0.8.8,<0.9.0"]
 build-backend = "uv_build"
 
 [dependency-groups]