Merge pull request #117 from WIAS-PDELib/dependabot/github_actions/codecov/codecov-action-6

Bump codecov/codecov-action from 5 to 6

Author: j-fu

.github/workflows/ci.yml

@@ -49,7 +49,7 @@ jobs:
         env:
           PYTHON: ""
       - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v5
+      - uses: codecov/codecov-action@v6
         with:
           file: lcov.info
   docs: