Bump @angular/language-service from 7.0.0 to 8.2.7 in /angular/app-i18n

Bumps [@angular/language-service](https://github.com/angular/angular) from 7.0.0 to 8.2.7.
- [Release notes](https://github.com/angular/angular/releases)
- [Changelog](https://github.com/angular/angular/blob/master/CHANGELOG.md)
- [Commits](angular/angular@7.0.0...8.2.7)

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

Author: dependabot-preview[bot]

angular/app-i18n/package-lock.json

@@ -31,7 +31,7 @@
     "@angular-devkit/build-angular": "~0.10.0",
     "@angular/cli": "^7.0.2",
     "@angular/compiler-cli": "^7.0.0",
-    "@angular/language-service": "^8.2.6",
+    "@angular/language-service": "^8.2.7",
     "@types/jasmine": "~2.8.9",
     "@types/jasminewd2": "~2.0.6",
     "@types/node": "~10.12.0",