test: Enable draft-7 in tests

Author: DannyvdSluijs

tests/JsonSchemaTestSuiteTest.php

@@ -64,7 +64,7 @@ public function casesDataProvider(): \Generator
         $drafts = array_filter(glob($testDir . '/*'), static function (string $filename) {
             return is_dir($filename);
         });
-        $skippedDrafts = ['draft7', 'draft2019-09', 'draft2020-12', 'draft-next', 'latest'];
+        $skippedDrafts = ['draft2019-09', 'draft2020-12', 'draft-next', 'latest'];
 
         foreach ($drafts as $draft) {
             if (in_array(basename($draft), $skippedDrafts, true)) {