fix: bump PHP requirement to >=8.4

utopia-php/query 0.1.* requires PHP >=8.4. Updated composer.json
and CI workflow to match.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: lohanidamodar

.github/workflows/codeql-analysis.yml

@@ -13,7 +13,7 @@ jobs:
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: '8.3'
+          php-version: '8.4'
 
       - name: Install dependencies
         run: composer install --prefer-dist --no-progress

composer.json

@@ -16,7 +16,7 @@
     },
     "minimum-stability": "stable",
     "require": {
-        "php": ">=8.3",
+        "php": ">=8.4",
         "utopia-php/fetch": "0.5.*",
         "utopia-php/query": "0.1.*"
     },