chore(deps): update dependency json-schema-to-typescript to v15

Author: renovate[bot]

package.json

@@ -62,7 +62,7 @@
     "download-cli": "^1.1.1",
     "eslint": "^7.28.0",
     "husky": "1.2.0",
-    "json-schema-to-typescript": "8.2.0",
+    "json-schema-to-typescript": "15.0.3",
     "prettier": "2.3.1",
     "semantic-release": "15.12.5",
     "typescript": "3.9.3"