We'll be releasing from the `xcode11.1` branch, therefore we need to move to the stable version scheme (even numbers).
In addition, since Xcode is out of GM we need to update the Xcode path so the stable device bots pickup those builds.
* Bump for Xcode 11 beta 4
xtro tests will fail until we have an update for sharpie, however
the introspection tests should be fine (with the small changes in
arkit.cs and uikit.cs)
xtro failure:
```
System.NotImplementedException: AVAudioInteger
at (wrapper managed-to-native) Clang.Ast.AstReader.LoadInternal(Clang.Ast.AstReader,string)
at Clang.Ast.AstReader.Load (System.String astPath) [0x00014] in /Users/builder/vsts-agent/_work/5/s/Clang/Ast/AstReader.cs:33
at Extrospection.Runner.Execute (System.String pchFile, System.Collections.Generic.IEnumerable`1[T] assemblyNames) [0x0019a] in /Users/poupou/git/xcode11/xamarin-macios/tests/xtro-sharpie/Runner.cs:54
at Extrospection.MainClass.Main (System.String[] args) [0x00046] in /Users/poupou/git/xcode11/xamarin-macios/tests/xtro-sharpie/Program.cs:20
```
due to
```diff
-typedef CF_ENUM(NSInteger, AVAudioSessionErrorCode) {
+typedef CF_ENUM(AVAudioInteger, AVAudioSessionErrorCode) {
```
https://github.com/xamarin/xamarin-macios/wiki/CoreAudioTypes-iOS-xcode11-beta4
* [tests] CoreText stopped reporting error when font files are missing
* Fix xtro (EnumCheck.cs) and update its data files
* Fix xtro results (due to some local changes)
Vincent Dondain
Sebastien Pouliot
Matt Sylvia
Rolf Bjarne Kvinge
Connor Adsit
Sebastien Pouliot
Matt Sylvia