Bump @angular/cli from 8.3.8 to 8.3.9 in /angular/ng-docker

Bumps [@angular/cli](https://github.com/angular/angular-cli) from 8.3.8 to 8.3.9.
- [Release notes](https://github.com/angular/angular-cli/releases)
- [Commits](angular/angular-cli@v8.3.8...v8.3.9)

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

Author: dependabot-preview[bot]

angular/ng-docker/package-lock.json

@@ -26,7 +26,7 @@
   },
   "devDependencies": {
     "@angular-devkit/build-angular": "~0.803.9",
-    "@angular/cli": "^8.3.8",
+    "@angular/cli": "^8.3.9",
     "@angular/compiler-cli": "^8.2.7",
     "@angular/language-service": "^8.2.10",
     "@types/jasmine": "~3.4.4",