Revert checkout GitHub action

Author: vrza

.github/workflows/build.yml

@@ -35,7 +35,7 @@ jobs:
       run: git config --global core.autocrlf false
 
     - name: Checkout
-      uses: actions/checkout@v6
+      uses: actions/checkout@v4
 
     - name: Setup Node.js ${{ matrix.node }}
       uses: actions/setup-node@v4