Bump @backstage/plugin-scaffolder-backend from 1.19.2 to 2.2.2 in /app

Bumps [@backstage/plugin-scaffolder-backend](https://github.com/backstage/backstage/tree/HEAD/plugins/scaffolder-backend) from 1.19.2 to 2.2.2.
- [Release notes](https://github.com/backstage/backstage/releases)
- [Changelog](https://github.com/backstage/backstage/blob/master/plugins/scaffolder-backend/CHANGELOG.md)
- [Commits](https://github.com/backstage/backstage/commits/HEAD/plugins/scaffolder-backend)

---
updated-dependencies:
- dependency-name: "@backstage/plugin-scaffolder-backend"
  dependency-version: 2.2.2
  dependency-type: direct:production
...

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

Author: dependabot[bot]

app/packages/backend/package.json

@@ -31,7 +31,7 @@
     "@backstage/plugin-permission-common": "^0.7.11",
     "@backstage/plugin-permission-node": "^0.7.19",
     "@backstage/plugin-proxy-backend": "^0.4.6",
-    "@backstage/plugin-scaffolder-backend": "^1.19.2",
+    "@backstage/plugin-scaffolder-backend": "^2.2.2",
     "@backstage/plugin-search-backend": "^1.4.8",
     "@backstage/plugin-search-backend-module-catalog": "^0.1.12",
     "@backstage/plugin-search-backend-module-pg": "^0.5.17",