chore(deps-dev): bump @angular/language-service from 9.1.6 to 9.1.8

Bumps [@angular/language-service](https://github.com/angular/angular/tree/HEAD/packages/language-service) from 9.1.6 to 9.1.8.
- [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/9.1.8/packages/language-service)

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

Author: dependabot-preview[bot]

package.json

@@ -67,7 +67,7 @@
     "@angular-devkit/build-angular": "^0.803.26",
     "@angular/cli": "^8.3.25",
     "@angular/compiler-cli": "^8.1.2",
-    "@angular/language-service": "^9.1.6",
+    "@angular/language-service": "^9.1.8",
     "@types/chai": "^4.2.11",
     "@types/chai-as-promised": "^7.1.2",
     "@types/ffi-napi": "^2.4.1",

yarn.lock

@@ -221,10 +221,10 @@
   dependencies:
     tslib "^1.9.0"
 
-"@angular/language-service@^9.1.6":
-  version "9.1.6"
-  resolved "https://registry.yarnpkg.com/@angular/language-service/-/language-service-9.1.6.tgz#ff5e4bda847192820d7921f4551aaa1af8192ed3"
-  integrity sha512-pB18hVoAbIuk1Wus8ur7yUxSukfPR4pCXiOfbxDQ94qlCzLAzIwXbaNV4erpBfL/fUKxMY3h8RrVt0dfm6M5RQ==
+"@angular/language-service@^9.1.8":
+  version "9.1.8"
+  resolved "https://registry.yarnpkg.com/@angular/language-service/-/language-service-9.1.8.tgz#dcc8d27c355876ba0a6f4ea4375703e45b6d994c"
+  integrity sha512-+G2uFUNLCUEn4oThPO1reMHW1RzFqqJpvVs2joKnTzpAwOXWcPppj0vvmX/WzbZ7HWouFg8fjNfRn5tBVMgyXg==
 
 "@angular/platform-browser-dynamic@^8.2.14":
   version "8.2.14"