fix: add missing validation types

Author: lottamus

src/utils/__tests__/__snapshots__/renderSchema.spec.ts.snap

@@ -254,7 +254,11 @@ Array [
         },
       },
       "type": "object",
-      "validations": Object {},
+      "validations": Object {
+        "xml": Object {
+          "name": "Pet",
+        },
+      },
     },
     "name": "",
   },
@@ -1735,6 +1739,7 @@ Array [
           "PRINT_AT_KIOSK",
           "SECURE_PAPER",
         ],
+        "readOnly": true,
       },
     },
     "name": "",

src/utils/getValidations.ts

@@ -8,6 +8,12 @@ export const COMMON_VALIDATION_TYPES = [
   'default',
   'example',
   'deprecated',
+  'nullable',
+  'discriminator',
+  'readOnly',
+  'writeOnly',
+  'xml',
+  'externalDocs',
 ];
 
 const VALIDATION_TYPES = {