Bump @angular/core in /templates/windows-admin-center-extension-template

Bumps [@angular/core](https://github.com/angular/angular/tree/HEAD/packages/core) from 7.1.1 to 10.2.5.
- [Release notes](https://github.com/angular/angular/releases)
- [Changelog](https://github.com/angular/angular/blob/10.2.5/CHANGELOG.md)
- [Commits](https://github.com/angular/angular/commits/10.2.5/packages/core)

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

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

templates/windows-admin-center-extension-template/package.json

@@ -9,7 +9,7 @@
     "@angular/animations": "7.1.1",
     "@angular/common": "7.1.1",
     "@angular/compiler": "7.1.1",
-    "@angular/core": "7.1.1",
+    "@angular/core": "10.2.5",
     "@angular/forms": "7.1.1",
     "@angular/language-service": "7.1.1",
     "@angular/platform-browser": "7.1.1",
@@ -27,7 +27,7 @@
     "@angular/common": "7.1.1",
     "@angular/compiler": "7.1.1",
     "@angular/compiler-cli": "7.1.1",
-    "@angular/core": "7.1.1",
+    "@angular/core": "10.2.5",
     "@angular/forms": "7.1.1",
     "@angular/language-service": "7.1.1",
     "@angular/platform-browser": "7.1.1",