Bump ngx-diff from 5.0.0 to 6.0.0 in /generators/angular-audit/resources

Bumps [ngx-diff](https://github.com/rars/ngx-diff) from 5.0.0 to 6.0.0.
- [Release notes](https://github.com/rars/ngx-diff/releases)
- [Changelog](https://github.com/rars/ngx-diff/blob/main/CHANGELOG.md)
- [Commits](rars/ngx-diff@v5.0.0...v6.0.0)

---
updated-dependencies:
- dependency-name: ngx-diff
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

generators/angular-audit/resources/package.json

@@ -1,5 +1,5 @@
 {
   "dependencies": {
-    "ngx-diff": "5.0.0"
+    "ngx-diff": "6.0.0"
   }
 }