Update dependency typescript to ~2.9.0

Author: renovate[bot]

doc/package.json

@@ -36,6 +36,6 @@
         "@angular/cli": "1.6.3",
         "@angular/compiler-cli": "5.1.2",
         "@angular/language-service": "^5.0.0",
-        "typescript": "~2.4.2"
+        "typescript": "~2.9.0"
     }
 }

doc/yarn.lock

@@ -4904,14 +4904,15 @@ typedarray@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
-typescript@~2.4.2:
-  version "2.4.2"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.4.2.tgz#f8395f85d459276067c988aa41837a8f82870844"
-
 typescript@~2.6.1:
   version "2.6.2"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.6.2.tgz#3c5b6fd7f6de0914269027f03c0946758f7673a4"
 
+typescript@~2.9.0:
+  version "2.9.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.9.2.tgz#1cbf61d05d6b96269244eb6a3bce4bd914e0f00c"
+  integrity sha512-Gr4p6nFNaoufRIY4NMdpQRNmgxVIGMs4Fcu/ujdYk3nAZqk7supzBE9idmvfZIlH/Cuj//dvi+019qEue9lV0w==
+
 uglify-es@3.2.2:
   version "3.2.2"
   resolved "https://registry.yarnpkg.com/uglify-es/-/uglify-es-3.2.2.tgz#15c62b7775002c81b7987a1c49ecd3f126cace73"