Explicitly set CI env variable for coverage runs

Co-authored-by: kwerle <23320+kwerle@users.noreply.github.com>

Author: Copilot

.github/workflows/test.yml

@@ -22,6 +22,8 @@ jobs:
       run: make test
     - name: Run tests with coverage
       run: make coverage
+      env:
+        CI: true
     - name: Upload coverage to Codecov
       uses: codecov/codecov-action@v4
       with: