Upload coverage reports for Python 3.10

The coverage report upload was previously configured to run only for
Python 3.12. This change aligns the upload with the lowest Python
version we run unit tests on.

Signed-off-by: Michal Šoltis <msoltis@redhat.com>

Author: slimreaper35

.github/workflows/gating.yaml

@@ -40,7 +40,7 @@ jobs:
           nox -s "python-${{ matrix.python-version }}"
 
       - name: Upload coverage reports to Codecov
-        if: matrix.python-version == '3.12'
+        if: matrix.python-version == '3.10'
         uses: codecov/codecov-action@v6
         with:
           token: ${{ secrets.CODECOV_TOKEN }}