chore(deps): bump helmet from 3.23.2 to 4.0.0

Bumps [helmet](https://github.com/helmetjs/helmet) from 3.23.2 to 4.0.0.
- [Release notes](https://github.com/helmetjs/helmet/releases)
- [Changelog](https://github.com/helmetjs/helmet/blob/master/CHANGELOG.md)
- [Commits](https://github.com/helmetjs/helmet/compare/v3.23.2...v4.0.0)

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

plugins/scaffolder-backend/package.json

@@ -35,7 +35,7 @@
     "fs-extra": "^9.0.0",
     "git-url-parse": "^11.1.2",
     "globby": "^11.0.0",
-    "helmet": "^3.22.0",
+    "helmet": "^4.0.0",
     "morgan": "^1.10.0",
     "nodegit": "0.26.5",
     "uuid": "^8.2.0",