chore(deps): update dependency @types/inquirer to v8

Author: renovate-bot

project-generator/package-lock.json

@@ -27,7 +27,7 @@
     "@oclif/test": "1.2.8",
     "@oclif/tslint": "3.1.1",
     "@types/chai": "4.2.14",
-    "@types/inquirer": "7.3.1",
+    "@types/inquirer": "8.1.2",
     "@types/mkdirp": "1.0.1",
     "@types/mocha": "9.0.0",
     "@types/node": "14.14.13",