Update GitHub Actions to latest checkout/cache versions

.github/workflows/copilot-setup-steps.yml

@@ -23,7 +23,7 @@ jobs:
 
     steps:
       - name: Checkout repository (optional)
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
@@ -39,21 +39,13 @@ jobs:
           echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
 
       - name: Cache Composer dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ${{ steps.composer-cache.outputs.dir }}
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
           restore-keys: |
             ${{ runner.os }}-composer-
 
-      - name: Cache vendor directory
-        uses: actions/cache@v4
-        with:
-          path: vendor
-          key: ${{ runner.os }}-vendor-${{ hashFiles('**/composer.json') }}
-          restore-keys: |
-            ${{ runner.os }}-vendor-
-
       - name: Install Composer dependencies
         run: composer install --no-progress --prefer-dist --optimize-autoloader --no-interaction
 
@@ -66,15 +58,15 @@ jobs:
         run: echo "week=$(date +%Y-W%U)" >> $GITHUB_OUTPUT
 
       - name: Cache act binary
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: .cache/bin
           key: ${{ runner.os }}-${{ runner.arch }}-act-binary-${{ steps.week.outputs.week }}
           restore-keys: |
             ${{ runner.os }}-${{ runner.arch }}-act-binary-
 
       - name: Cache act local caches
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: |
             .cache/act/artifacts