Fix CS

Author: HypeMC

tests/Cache/Subscription/PurgeSubscriptionProviderTest.php

@@ -494,7 +494,7 @@ public function testExceptionIsThrownOnInvalidRouteParamsExpression(string $expr
     {
         $routeMetadataProvider = self::createStub(RouteMetadataProviderInterface::class);
         $routeMetadataProvider->method('provide')
-            ->willReturnCallback(function () use ($expression): iterable {
+            ->willReturnCallback(static function () use ($expression): iterable {
                 yield new RouteMetadata(
                     routeName: 'foo',
                     route: new Route('/{foo}'),
@@ -517,7 +517,7 @@ class: 'FooEntity',
                         public function getFunctions(): array
                         {
                             return [
-                                new ExpressionFunction('valid_function', function () {}, function () {}),
+                                new ExpressionFunction('valid_function', static function () {}, static function () {}),
                             ];
                         }
                     },