Give codecov a token

https://community.codecov.com/t/upload-issues-unable-to-locate-build-via-github-actions-api/3954/10

Author: bluetech

.github/workflows/main.yml

@@ -59,6 +59,7 @@ jobs:
         with:
           fail_ci_if_error: true
           files: ./coverage.xml
+          token: ${{ secrets.CODECOV_TOKEN }}
 
     strategy:
       fail-fast: false