Rename simple.yml to macwin.yml

Author: phadej

.github/workflows/simple.yml renamed to .github/workflows/macwin.yml

@@ -1,4 +1,4 @@
-name: Simple
+name: MacWin
 on:
   push:
     branches:
@@ -9,7 +9,7 @@ on:
 
 jobs:
   native:
-    name: "Simple: GHC ${{ matrix.ghc }} on ${{ matrix.os }}"
+    name: "GHC ${{ matrix.ghc }} on ${{ matrix.os }}"
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
@@ -24,7 +24,7 @@ jobs:
           git config --global core.eol lf
 
       - name: Checkout
-        uses: actions/checkout@v3.0.2
+        uses: actions/checkout@v4
 
       - name: Set up Haskell
         id: setup-haskell