Update app19.json

#925: icon param should not be required

Author: chrisupb

springdoc-openapi-data-rest/src/test/resources/results/app19.json

@@ -36,7 +36,6 @@
           {
             "name": "icon",
             "in": "query",
-            "required": true,
             "schema": {
               "type": "string"
             }