ci: disable fail-fast

Author: rossengeorgiev

.github/workflows/testing_initiative.yml

@@ -30,6 +30,7 @@ jobs:
   test:
     runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
         python-version: [2.7, 3.5, 3.6, 3.7, 3.8, 3.9]