ci: 🎡 measure and upload coverage only for the latest Node.js

Author: ttskch

.github/workflows/ci.yaml

@@ -26,7 +26,9 @@ jobs:
       - run: pnpm test
       - run: pnpm build
       - run: pnpm test:coverage
+        if: ${{ matrix.node == 23 }}
       - uses: codecov/codecov-action@v4
+        if: ${{ matrix.node == 23 }}
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           files: coverage/clover.xml