add latest llvm

Author: 2002Bishwajeet

.github/workflows/build.yml

@@ -35,9 +35,9 @@ jobs:
 
       - name: Install LLVM on macOS
         if: runner.os == 'macOS'
-        run: brew install llvm@12
+        run: brew install llvm
         env:
-          PATH: /usr/local/opt/llvm@12/bin:$PATH
+          PATH: /usr/local/opt/llvm/bin:$PATH
 
       - name: Set up Haskell (GHC & Cabal)
         uses: haskell-actions/setup@v2