chore(deps): bump @angular/core in /ionic-angular/base

Bumps [@angular/core](https://github.com/angular/angular/tree/HEAD/packages/core) from 5.2.11 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:production
...

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

ionic-angular/base/package.json

@@ -15,7 +15,7 @@
     "@angular/common": "5.2.11",
     "@angular/compiler": "5.2.11",
     "@angular/compiler-cli": "5.2.11",
-    "@angular/core": "5.2.11",
+    "@angular/core": "10.2.5",
     "@angular/forms": "5.2.11",
     "@angular/platform-browser": "5.2.11",
     "@angular/platform-browser-dynamic": "5.2.11",