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

Bumps [@ionic/angular](https://github.com/ionic-team/ionic-framework) from 8.3.4 to 8.4.0.
- [Release notes](https://github.com/ionic-team/ionic-framework/releases)
- [Changelog](https://github.com/ionic-team/ionic-framework/blob/main/CHANGELOG.md)
- [Commits](ionic-team/ionic-framework@v8.3.4...v8.4.0)

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

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

generators/ionic/resources/base/package.json

@@ -40,7 +40,7 @@
     "@fortawesome/angular-fontawesome": "0.15.0",
     "@fortawesome/fontawesome-svg-core": "6.6.0",
     "@fortawesome/free-solid-svg-icons": "6.6.0",
-    "@ionic/angular": "8.3.4",
+    "@ionic/angular": "8.4.0",
     "@ionic/pwa-elements": "^3.3.0",
     "@ionic/storage": "^4.0.0",
     "@ionic/storage-angular": "^4.0.0",