fix(deps): update dependency ajv to v8

Author: renovate[bot]

package-lock.json

@@ -43,7 +43,7 @@
   "dependencies": {
     "@types/express": "4.17.13",
     "@types/valid-url": "^1.0.3",
-    "ajv": "6.12.6",
+    "ajv": "8.15.0",
     "api-spec-converter": "2.12.0",
     "chalk": "4.1.2",
     "chokidar": "3.5.3",