updates @usebruno/converters to 0.21.0

Author: JaredCE

package-lock.json

@@ -54,7 +54,7 @@
   "dependencies": {
     "@apidevtools/json-schema-ref-parser": "^9.1.0",
     "@redocly/openapi-core": "^1.34.5",
-    "@usebruno/converters": "^0.17.1",
+    "@usebruno/converters": "^0.21.0",
     "chalk": "^4.1.2",
     "js-yaml": "^5.1.0",
     "json-schema-for-openapi": "^0.5.0",