Bump @angular/core in /samples/angularelements-helloworld

Bumps [@angular/core](https://github.com/angular/angular/tree/HEAD/packages/core) from 6.0.3 to 11.0.5.
- [Release notes](https://github.com/angular/angular/releases)
- [Changelog](https://github.com/angular/angular/blob/main/CHANGELOG.md)
- [Commits](https://github.com/angular/angular/commits/11.0.5/packages/core)

---
updated-dependencies:
- dependency-name: "@angular/core"
  dependency-type: direct:production
...

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

samples/angularelements-helloworld/package-lock.json

@@ -35,17 +35,17 @@
       }
     },
     "@angular/core": {
-      "version": "6.0.3",
-      "resolved": "https://registry.npmjs.org/@angular/core/-/core-6.0.3.tgz",
-      "integrity": "sha512-YJk0kS/V9C2JFKMHfiw6TNxmfkYWGW4HzqGOm/VoPkvj9O4Erkz/OtOOc8hYGmXFmQz1UpOAByzY2XIlEi72XQ==",
+      "version": "11.0.5",
+      "resolved": "https://registry.npmjs.org/@angular/core/-/core-11.0.5.tgz",
+      "integrity": "sha512-XAXWQi7R3ucZXQwx9QK5jSKJeQyRJ53u2dQDpr7R5stzeCy1a5hrNOkZLg9zOTTPcth/6+FrOrRZP9SMdxtw3w==",
       "requires": {
-        "tslib": "1.9.1"
+        "tslib": "^2.0.0"
       },
       "dependencies": {
         "tslib": {
-          "version": "1.9.1",
-          "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.9.1.tgz",
-          "integrity": "sha512-avfPS28HmGLLc2o4elcc2EIq2FcH++Yo5YxpBZi9Yw93BCTGFthI4HPE4Rpep6vSYQaK8e69PelM44tPj+RaQg=="
+          "version": "2.4.0",
+          "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.4.0.tgz",
+          "integrity": "sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ=="
         }
       }
     },

samples/angularelements-helloworld/package.json

@@ -13,7 +13,7 @@
   "dependencies": {
     "@angular/common": "^6.0.3",
     "@angular/compiler": "^6.0.3",
-    "@angular/core": "^6.0.3",
+    "@angular/core": "^11.0.5",
     "@angular/elements": "^6.0.3",
     "@angular/platform-browser": "^6.0.3",
     "@angular/platform-browser-dynamic": "^6.0.3",