Update a workflow file for GitHub Actions to test on Windows

.github/workflows/ci.yml

@@ -23,6 +23,7 @@ jobs:
       matrix:
         os:
           - ubuntu-latest
+          - windows-latest
 
         php-version:
           - "7.1"
@@ -52,7 +53,7 @@ jobs:
             compiler: jit
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Override PHP ini values for JIT compiler
       if: matrix.compiler == 'jit'
@@ -71,7 +72,7 @@ jobs:
 
     - name: Cache Composer packages
       id: composer-cache
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: vendor
         key: ${{ runner.os }}-php-${{ matrix.php-version }}-${{ hashFiles('**/composer.lock') }}