Try re-enabling master

Author: domesticmouse

.github/workflows/flutter-ci.yml

@@ -23,9 +23,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        # TODO(Domesticmouse): Deal with formatting issues
-        # flutter_version: [stable, beta, master]
-        flutter_version: [stable, beta]
+        flutter_version: [stable, beta, master]
         os: [ubuntu-latest, macos-latest, windows-latest]
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683