Revert "Bump codecov/codecov-action from 4.5.0 to 4.6.0"

This reverts commit 9b3b931.

Author: jakob-keller

.github/workflows/ci-cd.yml

@@ -83,7 +83,7 @@ jobs:
         make mototest
     - name: Upload coverage to Codecov
       if: matrix.python-version == '3.11'
-      uses: codecov/codecov-action@v4.6.0
+      uses: codecov/codecov-action@v4.5.0
       with:
         token: ${{ secrets.CODECOV_TOKEN }}  # not required for public repos
         files: ./coverage.xml