Merge pull request #68 from microsoftgraph/dependabot/composer/phpstan/phpstan-2.1.31

Bump phpstan/phpstan from 1.10.48 to 2.1.31

Author: jasonjoh

composer.json

@@ -14,7 +14,7 @@
         "monolog/monolog": "^3.4"
     },
     "require-dev": {
-        "phpstan/phpstan": "^1.10"
+        "phpstan/phpstan": "^2.1"
     },
     "config": {
         "allow-plugins": {