ci(coverage): authenticate Codecov upload with org CODECOV_TOKEN

Author: MattJackson

.github/workflows/ci.yml

@@ -80,6 +80,7 @@ jobs:
       - name: Upload to Codecov (tokenless; never fails the build)
         uses: codecov/codecov-action@v5
         with:
+          token: ${{ secrets.CODECOV_TOKEN }}
           files: plugin/lcov.info
           slug: GetBusbar/store-sqlite
           fail_ci_if_error: false