Bump codecov/codecov-action from 5 to 6 in the actions group (#76)

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

Author: dependabot[bot]

.github/workflows/test.yml

@@ -35,7 +35,7 @@ jobs:
           uvx --with tox-uv tox -e py
 
       - name: Upload coverage
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
         with:
           flags: ${{ matrix.python-version }}
           name: Python ${{ matrix.python-version }}