Revert changes

Author: SOHELAHMED7

src/spec/OpenApi.php

@@ -37,7 +37,7 @@ protected function attributes(): array
             'servers' => [Server::class],
             'paths' => Paths::class,
             'components' => Components::class,
-            'security' => SecurityRequirements::class,
+            'security' => [SecurityRequirement::class],
             'tags' => [Tag::class],
             'externalDocs' => ExternalDocumentation::class,
         ];

src/spec/Operation.php

@@ -46,7 +46,7 @@ protected function attributes(): array
             'responses' => Responses::class,
             'callbacks' => [Type::STRING, Callback::class],
             'deprecated' => Type::BOOLEAN,
-            'security' => SecurityRequirements::class,
+            'security' => [SecurityRequirement::class],
             'servers' => [Server::class],
         ];
     }

tests/WriterTest.php

@@ -211,9 +211,7 @@ public function testSecurityAtPathOperationLevel()
             'paths' => [
                 '/test' => new PathItem([
                     'get' => new Operation([
-                        'security' => new SecurityRequirements([
-                            'BearerAuth' => new SecurityRequirement([]),
-                        ]),
+                        'security' => [new SecurityRequirement(['BearerAuth' => []])],
                         'responses' => new Responses([
                             200 => new Response(['description' => 'OK']),
                         ])