Update yo requirement in /packages/generator/app/templates

Updates the requirements on [yo](https://github.com/yeoman/yo) to permit the latest version.
- [Release notes](https://github.com/yeoman/yo/releases)
- [Commits](yeoman/yo@v2.0.6...v3.1.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

packages/generator/app/templates/package.json

@@ -70,7 +70,7 @@
     "sinon-chai": "^3.3.0",
     "stylelint": "^10.1.0",
     "xvfb-maybe": "^0.2.1",
-    "yo": "^2.0.6"
+    "yo": "^3.1.0"
   },
   "engines": {
     "node": ">=8.0.0"