fix(@schematics/angular): increase version range for TypeScript

Author: sarunint

packages/schematics/angular/package.json

@@ -14,6 +14,6 @@
   "dependencies": {
     "@angular-devkit/core": "0.0.0",
     "@angular-devkit/schematics": "0.0.0",
-    "typescript": ">=2.6.2 <2.8"
+    "typescript": ">=2.6.2 <2.10"
   }
 }