mgr/dashboard: bump @ngx-formly/core

Bumps [@ngx-formly/core](https://github.com/ngx-formly/ngx-formly) from 6.1.1 to 6.3.6.
- [Release notes](https://github.com/ngx-formly/ngx-formly/releases)
- [Changelog](https://github.com/ngx-formly/ngx-formly/blob/main/CHANGELOG.md)
- [Commits](ngx-formly/ngx-formly@v6.1.1...v6.3.6)

---
updated-dependencies:
- dependency-name: "@ngx-formly/core"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

src/pybind/mgr/dashboard/frontend/package.json

@@ -56,7 +56,7 @@
     "@circlon/angular-tree-component": "10.0.0",
     "@ng-bootstrap/ng-bootstrap": "14.2.0",
     "@ngx-formly/bootstrap": "6.1.1",
-    "@ngx-formly/core": "6.1.1",
+    "@ngx-formly/core": "6.3.6",
     "@popperjs/core": "2.10.2",
     "@swimlane/ngx-datatable": "18.0.0",
     "@types/file-saver": "2.0.1",