chore: Remove pest-plugin-drift dependency and adjust max-parallel setting in CI workflow

Author: CodeWithKyrian

.github/workflows/tests.yml

@@ -10,7 +10,7 @@ jobs:
       fail-fast: false
       matrix:
         php: [8.1, 8.2, 8.3, 8.4]
-      max-parallel: 4
+      max-parallel: 2
 
     name: Tests PHP${{ matrix.php }}
 

composer.json

@@ -29,7 +29,6 @@
         "friendsofphp/php-cs-fixer": "^3.75",
         "mockery/mockery": "^1.6",
         "pestphp/pest": "^2.36.0|^3.5.0",
-        "pestphp/pest-plugin-drift": "^3.0",
         "react/async": "^4.0",
         "react/child-process": "^0.6.6",
         "symfony/var-dumper": "^6.4.11|^7.1.5"