fix(deps): update dependency json-schema to ^0.3.0 (#102)

Author: renovate-bot

service-directory/snippets/package.json

@@ -15,7 +15,7 @@
   "dependencies": {
     "@google-cloud/service-directory": "^3.0.0",
     "eslint": "^7.0.0",
-    "json-schema": "^0.2.5",
+    "json-schema": "^0.3.0",
     "uuid": "^8.0.0"
   },
   "devDependencies": {