3.1 Schema - tags should not contain duplicates

Author: jdesrosiers

schemas/v3.1/schema.yaml

@@ -26,6 +26,7 @@ properties:
     type: array
     items:
       $ref: '#/$defs/tag'
+    uniqueItems: true
   externalDocs:
     $ref: '#/$defs/external-documentation'
 required:
@@ -224,6 +225,7 @@ $defs:
         type: array
         items:
           type: string
+        uniqueItems: true
       summary:
         type: string
       description: