Merge pull request #29 from matplotlib/dependabot/github_actions/codecov/codecov-action-5.5.0

Bump codecov/codecov-action from 5.4.3 to 5.5.0

Author: tacaswell

.github/workflows/testing.yml

@@ -44,4 +44,4 @@ jobs:
         coverage report
 
     - name: Upload code coverage
-      uses: codecov/codecov-action@18283e04ce6e62d37312384ff67231eb8fd56d24 # v5.4.3
+      uses: codecov/codecov-action@fdcc8476540edceab3de004e990f80d881c6cc00 # v5.5.0