Only run codecov on pr

Signed-off-by: Andre Kurait <[email protected]>

.github/workflows/CI.yml

@@ -116,12 +116,16 @@ jobs:
             **/reports/jacoco/mergedReport/
 
       - name: Upload to Codecov
+        if: github.event_name == 'pull_request'
         uses: codecov/codecov-action@v4
         with:
           files: ${{ github.workspace }}/build/reports/jacoco/mergedReport/jacocoMergedReport.xml
           flags: gradle-test
           fail_ci_if_error: true
           disable_search: true
+        # This step is limited to pull requests because Codecov uploads from 
+        # push events require a token for security reasons. PR events use a token 
+        # provided by GitHub Actions, but push events do not, causing uploads to fail.
 
   python-e2e-tests:
     runs-on: ubuntu-latest