Bump the npm_and_yarn group across 1 directory with 3 updates

Bumps the npm_and_yarn group with 3 updates in the /packages/backend directory: [@backstage/backend-defaults](https://github.com/backstage/backstage/tree/HEAD/packages/backend-defaults), [@backstage/plugin-permission-backend](https://github.com/backstage/backstage/tree/HEAD/plugins/permission-backend) and [@backstage/plugin-scaffolder-backend](https://github.com/backstage/backstage/tree/HEAD/plugins/scaffolder-backend).


Updates `@backstage/backend-defaults` from 0.5.3 to 0.15.2
- [Release notes](https://github.com/backstage/backstage/releases)
- [Changelog](https://github.com/backstage/backstage/blob/master/packages/backend-defaults/CHANGELOG.md)
- [Commits](https://github.com/backstage/backstage/commits/HEAD/packages/backend-defaults)

Updates `@backstage/plugin-permission-backend` from 0.5.55 to 0.7.9
- [Release notes](https://github.com/backstage/backstage/releases)
- [Changelog](https://github.com/backstage/backstage/blob/master/plugins/permission-backend/CHANGELOG.md)
- [Commits](https://github.com/backstage/backstage/commits/HEAD/plugins/permission-backend)

Updates `@backstage/plugin-scaffolder-backend` from 1.33.0 to 3.1.4
- [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/backend-defaults"
  dependency-version: 0.15.2
  dependency-type: direct:production
  dependency-group: npm_and_yarn
- dependency-name: "@backstage/plugin-permission-backend"
  dependency-version: 0.7.9
  dependency-type: direct:production
  dependency-group: npm_and_yarn
- dependency-name: "@backstage/plugin-scaffolder-backend"
  dependency-version: 3.1.4
  dependency-type: direct:production
  dependency-group: npm_and_yarn
...

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

Author: dependabot[bot]

packages/backend/package.json

@@ -16,7 +16,7 @@
   },
   "dependencies": {
     "@backstage/backend-common": "^0.25.0",
-    "@backstage/backend-defaults": "^0.5.3",
+    "@backstage/backend-defaults": "^0.15.2",
     "@backstage/backend-plugin-api": "^1.0.2",
     "@backstage/backend-tasks": "^0.5.14",
     "@backstage/catalog-client": "^1.8.0",
@@ -30,12 +30,12 @@
     "@backstage/plugin-catalog-backend": "^1.28.0",
     "@backstage/plugin-catalog-backend-module-scaffolder-entity-model": "^0.2.2",
     "@backstage/plugin-kubernetes-backend": "^0.19.0",
-    "@backstage/plugin-permission-backend": "^0.5.51",
+    "@backstage/plugin-permission-backend": "^0.7.9",
     "@backstage/plugin-permission-backend-module-allow-all-policy": "^0.2.2",
     "@backstage/plugin-permission-common": "^0.8.2",
     "@backstage/plugin-permission-node": "^0.8.5",
     "@backstage/plugin-proxy-backend": "^0.5.8",
-    "@backstage/plugin-scaffolder-backend": "^1.27.2",
+    "@backstage/plugin-scaffolder-backend": "^3.1.4",
     "@backstage/plugin-scaffolder-backend-module-github": "^0.5.5",
     "@backstage/plugin-scaffolder-backend-module-gitlab": "^0.7.1",
     "@backstage/plugin-search-backend": "^1.7.0",