Merge pull request #51 from EnergySystemsModellingLab/dependabot/github_actions/codecov/codecov-action-6

Bump codecov/codecov-action from 5 to 6

Author: github-actions[bot]

.github/workflows/ci.yml

@@ -113,7 +113,7 @@ jobs:
 
       - name: Upload coverage to Codecov
         if: runner.os == 'Linux'
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           files: ./coverage.xml