build(deps): bump @angular/http from 6.1.8 to 6.1.9

Bumps [@angular/http](https://github.com/angular/angular) from 6.1.8 to 6.1.9.
- [Release notes](https://github.com/angular/angular/releases)
- [Changelog](https://github.com/angular/angular/blob/master/CHANGELOG.md)
- [Commits](angular/angular@6.1.8...6.1.9)

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

Author: dependabot-support

package.json

@@ -28,7 +28,7 @@
     "@angular/compiler-cli": "^6.1.9",
     "@angular/core": "^6.1.9",
     "@angular/forms": "^6.1.9",
-    "@angular/http": "^6.1.8",
+    "@angular/http": "^6.1.9",
     "@angular/platform-browser": "^6.1.9",
     "@angular/platform-browser-dynamic": "^6.1.8",
     "@angular/router": "^6.1.9",

yarn.lock

@@ -74,9 +74,9 @@
   dependencies:
     tslib "^1.9.0"
 
-"@angular/http@^6.1.8":
-  version "6.1.8"
-  resolved "https://registry.yarnpkg.com/@angular/http/-/http-6.1.8.tgz#8c627a879285a366e960edc15522006474f4ec6f"
+"@angular/http@^6.1.9":
+  version "6.1.9"
+  resolved "https://registry.yarnpkg.com/@angular/http/-/http-6.1.9.tgz#241f35207d62f86bc155feb124a1e73515d66fb6"
   dependencies:
     tslib "^1.9.0"