Set fail-fast to false

Author: lukel97

.github/workflows/haskell.yml

@@ -8,6 +8,7 @@ jobs:
  runs-on: ${{matrix.os}}
 
  strategy:
+ fail-fast: false
  matrix:
  os: [ubuntu-latest , macOS-latest] # , windows-latest]
  ghc: ['8.6.5', '8.6.4', '8.6.3', '8.6.2', '8.4.4', '8.4.3']