ci: bump php to 8.4

Author: tharropoulos

.github/workflows/tests.yml

@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   test:
-    name: Run tests with PHP v8.3
+    name: Run tests with PHP v8.4
     runs-on: ubuntu-latest
     steps:
       - name: Start Typesense
@@ -24,10 +24,10 @@ jobs:
           --enable-cors
 
       - uses: actions/checkout@v4
-      - name: Setup PHP 8.3
+      - name: Setup PHP 8.4
         uses: shivammathur/setup-php@v2
         with:
-          php-version: "8.3"
+          php-version: "8.4"
           coverage: xdebug
       - uses: php-actions/composer@v6
       - name: Run tests