Update to 27.0.* AndroidSupport

Author: Glenn Watson

src/ReactiveUI.AndroidSupport/ReactiveUI.AndroidSupport.csproj

@@ -9,11 +9,11 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Xamarin.Android.Support.Animated.Vector.Drawable" Version="26.1.*" />
-    <PackageReference Include="Xamarin.Android.Support.v4" Version="26.1.*" />
-    <PackageReference Include="Xamarin.Android.Support.v7.AppCompat" Version="26.1.*" />
-    <PackageReference Include="Xamarin.Android.Support.v7.RecyclerView" Version="26.1.*" />
-    <PackageReference Include="Xamarin.Android.Support.Vector.Drawable" Version="26.1.*" />
+    <PackageReference Include="Xamarin.Android.Support.Animated.Vector.Drawable" Version="27.0.*" />
+    <PackageReference Include="Xamarin.Android.Support.v4" Version="27.0.*" />
+    <PackageReference Include="Xamarin.Android.Support.v7.AppCompat" Version="27.0.*" />
+    <PackageReference Include="Xamarin.Android.Support.v7.RecyclerView" Version="27.0.*" />
+    <PackageReference Include="Xamarin.Android.Support.Vector.Drawable" Version="27.0.*" />
     <PackageReference Include="System.Runtime.Serialization.Primitives" Version="4.3.0" />
     <Reference Include="System.Runtime.Serialization" />
   </ItemGroup>