fix: Java 13 is not supported, but is not detected as such

Currently we cannot build projects for Android when Java 13 is installed. However, we do not detect this and later the build operation fails with non-descriptive error message.
Update nativescript-doctor to 1.13.0 where version 13 (and above) is correctly detected as not supported.

Author: rosen-vladimirov

npm-shrinkwrap.json

@@ -60,7 +60,7 @@
     "mkdirp": "0.5.1",
     "mute-stream": "0.0.5",
     "nativescript-dev-xcode": "0.2.1",
-    "nativescript-doctor": "1.12.0",
+    "nativescript-doctor": "1.13.0",
     "nativescript-preview-sdk": "0.3.4",
     "open": "6.0.0",
     "ora": "2.0.0",
@@ -141,4 +141,4 @@
   "engines": {
     "node": ">=10.0.0 <14.0.0"
   }
-}
+}