ci: upload coverage on release

.github/workflows/push.yml

@@ -31,3 +31,36 @@ jobs:
           github-app-key: ${{ secrets.UGRC_RELEASE_BOT_APP_KEY }}
           github-app-name: ${{ secrets.UGRC_RELEASE_BOT_NAME }}
           github-app-email: ${{ secrets.UGRC_RELEASE_BOT_EMAIL }}
+
+  upload-coverage:
+    name: Upload coverage
+    runs-on: ubuntu-latest
+    needs: release-please
+    if: github.ref == 'refs/heads/main' && needs.release-please.outputs.release_created
+
+    steps:
+      - name: ⬇️ Set up code
+        uses: actions/checkout@v4
+        with:
+          show-progress: false
+
+      - name: 🐍 Set up Python
+        uses: actions/setup-python@v5
+        with:
+          cache: pip
+          cache-dependency-path: setup.py
+
+      - name: 🏗 Install module
+        run: pip install .[tests]
+
+      - name: ⚙️ Add config file
+        run: cp config.sample.json config.json
+
+      - name: 🧪 Run tests
+        run: pytest
+
+      - name: ⬆️ Upload coverage to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          file: ./cov.xml