Export cabal binaries path

Author: lunaticare

.github/workflows/pre-commit.yml

@@ -20,6 +20,7 @@ jobs:
     - name: "Install stylish-haskell"
       run: |
         cabal install stylish-haskell
+        echo "PATH=~/.cabal/bin:$PATH" >> $GITHUB_ENV
 
     - name: "Check stylish-haskell is available"
       run: |