coverage: remove the fail fast to continue for linux even if windows fails

Author: sylvestre

.github/workflows/ci.yml

@@ -53,7 +53,6 @@ jobs:
     name: Code Coverage
     runs-on: ${{ matrix.job.os }}
     strategy:
-      fail-fast: true
       matrix:
         job:
           - { os: ubuntu-latest  , features: unix }