build(deps): bump @angular/core in /generators/ionic/resources/base

Bumps [@angular/core](https://github.com/angular/angular/tree/HEAD/packages/core) from 14.1.3 to 15.2.9.
- [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/15.2.9/packages/core)

---
updated-dependencies:
- dependency-name: "@angular/core"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

generators/ionic/resources/base/package.json

@@ -20,7 +20,7 @@
   },
   "dependencies": {
     "@angular/common": "~14.1.3",
-    "@angular/core": "~14.1.3",
+    "@angular/core": "~15.2.9",
     "@angular/forms": "~14.1.3",
     "@angular/localize": "~14.1.3",
     "@angular/platform-browser": "~14.1.3",