add codecov token

Author: Deric-W

.github/workflows/Tests.yaml

@@ -35,6 +35,8 @@ jobs:
       with:
         flags: ${{ runner.os }}
         verbose: true
+      env:
+        CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
     - name: Build wheel
       if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')