Bump actions/checkout to v4

Author: fwcd

.github/workflows/build.yml

@@ -15,7 +15,7 @@ jobs:
 
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Haskell and Stack
       uses: haskell/actions/setup@v2
       with:

.github/workflows/deploy.yml

@@ -34,7 +34,7 @@ jobs:
     needs: [release]
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Haskell and Stack
       uses: haskell/actions/setup@v2
       with: