chore(package): update @types/angular to version 1.6.43

Author: greenkeeper[bot]

package.json

@@ -76,7 +76,7 @@
     "angular": ">=1.2.0"
   },
   "devDependencies": {
-    "@types/angular": "1.6.25",
+    "@types/angular": "1.6.43",
     "@types/angular-animate": "1.5.9",
     "@types/angular-mocks": "1.5.11",
     "@types/jasmine": "2.8.6",