Update to OpenSilver v3.3.0

Author: barjonp

.github/workflows/github-actions.yml

@@ -1,6 +1,6 @@
 name: OpenSilver.ControlsKit Build
 env:
-  next-release-version: '3.3.0'
+  next-release-version: '3.4.0'
   opensilver-package-source: 'https://www.myget.org/F/opensilver/api/v3/index.json'
   suffix: 'preview'
 on:

src/Directory.Build.targets

@@ -1,6 +1,6 @@
 <Project>
   <PropertyGroup>
-    <OpenSilverVersion Condition=" '$(OpenSilverVersion)' == '' ">3.2.0</OpenSilverVersion>
+    <OpenSilverVersion Condition=" '$(OpenSilverVersion)' == '' ">3.3.0</OpenSilverVersion>
     <EnableAdditionalMetadataAttributes>true</EnableAdditionalMetadataAttributes>
     <LangVersion>latest</LangVersion>
   </PropertyGroup>