Allow base_coverage job to fail

If there is a problem on master then base_coverage will never pass
meaning that coverage will never be run.

Author: julianstirling

.github/workflows/test.yml

@@ -5,6 +5,7 @@ on:
 
 jobs:
   base_coverage:
+    continue-on-error: true
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3