'fix: switch to v4-beta'

Author: thomasrockhu-codecov

.github/workflows/ci.yml

@@ -15,6 +15,6 @@ jobs:
       - name: Run tests and collect coverage
         run: pytest --cov app
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v4-beta-beta-beta-beta
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}