github actions have no concept of allowed failures

what a mess on github ... just build or fail. maybe the concept is to
branch first, but what about branches of the dependencies? is this really
continuous integration?


ref: https://github.com/actions/toolkit/issues/399 (Apr 2020)

.github/workflows/travis-workflow.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-18.04
     strategy:
       matrix:
-        php-versions: ['7.4', '8.1', '8.0', '5.6', '7.3', '7.2', '7.1', '7.0']
+        php-versions: ['7.4', '8.0', '5.6', '7.3', '7.2', '7.1', '7.0']
     name: PHP ${{ matrix.php-versions }}
     env:
       FOO: 'XXX'