Merge pull request #197 from codecov/update-to-v4

chore(ci): upgrade to v4

Author: thomasrockhu-codecov

.github/workflows/ci.yml

@@ -22,7 +22,7 @@ jobs:
       - name: Run tests and collect coverage
         run: pytest --cov app ${{ env.CODECOV_ATS_TESTS }}
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v4-beta
+        uses: codecov/codecov-action@v4
         with:
           flags: smart-tests
           verbose: true