Run PHP 8.4 integration tests

Author: nikic

.github/workflows/main.yml

@@ -73,7 +73,7 @@ jobs:
         run: "test_old/run-php-src.sh 7.4.33"
   test_old_80_70:
     runs-on: "ubuntu-latest"
-    name: "PHP 8.3 Code on PHP 7.4 Integration Tests"
+    name: "PHP 8.4 Code on PHP 7.4 Integration Tests"
     steps:
       - name: "Checkout"
         uses: "actions/checkout@v4"
@@ -87,7 +87,7 @@ jobs:
       - name: "Install PHP 8 dependencies"
         run: "COMPOSER_ROOT_VERSION=dev-master composer update --no-progress --prefer-dist"
       - name: "Tests"
-        run: "test_old/run-php-src.sh 8.3.0RC2"
+        run: "test_old/run-php-src.sh 8.4.0beta5"
   phpstan:
     runs-on: "ubuntu-latest"
     name: "PHPStan"