Bump @angular/language-service from 8.2.11 to 8.2.12

Bumps [@angular/language-service](https://github.com/angular/angular) from 8.2.11 to 8.2.12.
- [Release notes](https://github.com/angular/angular/releases)
- [Changelog](https://github.com/angular/angular/blob/master/CHANGELOG.md)
- [Commits](https://github.com/angular/angular/commits)

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

package.json

@@ -93,7 +93,7 @@
     "@angular-devkit/build-angular": "^0.803.14",
     "@angular/cli": "~8.3.14",
     "@angular/compiler-cli": "^8.2.2",
-    "@angular/language-service": "~8.2.11",
+    "@angular/language-service": "~8.2.12",
     "@types/ajv": "^1.0.0",
     "@types/lodash": "^4.14.144",
     "@types/node": "~12.11.5",