upload to codecov using the token (#1764)

This should fix the timeouts caused by GitHub rate-limiting
CodeCov.io

codecov/codecov-action#598

Author: mr-c

.github/workflows/ci-tests.yml

@@ -79,6 +79,7 @@ jobs:
         uses: codecov/codecov-action@v3
         with:
           fail_ci_if_error: true
+          token: ${{ secrets.CODECOV_TOKEN }}
 
   tox-style:
     name: CI linters via Tox
@@ -234,3 +235,4 @@ jobs:
         uses: codecov/codecov-action@v3
         with:
           fail_ci_if_error: true
+          token: ${{ secrets.CODECOV_TOKEN }}