relax coverage requirement for starters

Author: nuest

.github/workflows/ci.yml

@@ -71,7 +71,7 @@ jobs:
       run: |
         coverage html
         coverage xml
-        coverage report --show-missing --fail-under=70
+        coverage report --show-missing --fail-under=50
 
     #- name: Post code coverage
     #  uses: orgoro/coverage@v3.2