Add codecov token

Author: lcharette

.github/workflows/Build.yml

@@ -52,7 +52,8 @@ jobs:
       
       - name: Upload coverage to Codecov
         if: github.event_name != 'schedule'
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
         with:
+          token: ${{ secrets.CODECOV_TOKEN }}
           file: ./_meta/coverage.xml
           fail_ci_if_error: true