Support Codecov v4 changes (#254)

Pass `CODECOV_TOKEN` to shared workflow

Author: TheJulianJES

.github/workflows/ci.yml

@@ -13,4 +13,6 @@ jobs:
       CACHE_VERSION: 2
       PYTHON_VERSION_DEFAULT: 3.8.14
       PRE_COMMIT_CACHE_PATH:  ~/.cache/pre-commit
-      MINIMUM_COVERAGE_PERCENTAGE: 97
+      MINIMUM_COVERAGE_PERCENTAGE: 97
+    secrets:
+      CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}