bump PHP used for platform sync to 8.4

Author: dzuelke

.github/workflows/platform-sync.yml

@@ -152,7 +152,7 @@ jobs:
       - name: Install PHP and Composer
         uses: shivammathur/setup-php@44454db4f0199b8b9685a5d763dc37cbf79108e1 # 2.36.0
         with:
-          php-version: "8.2"
+          php-version: "8.4"
           tools: "composer:2.8"
       - name: Install Dev Center generator dependencies
         run: |
@@ -342,7 +342,7 @@ jobs:
       - name: Install PHP and Composer
         uses: shivammathur/setup-php@44454db4f0199b8b9685a5d763dc37cbf79108e1 # 2.36.0
         with:
-          php-version: "8.2"
+          php-version: "8.4"
           tools: "composer:2.8"
       - name: Install Dev Center generator dependencies
         run: |