chore: prepare 0.4.0 release

Author: EisenbergEffect

src/Microsoft.Fast.Components.FluentUI/Microsoft.Fast.Components.FluentUI.csproj

@@ -14,8 +14,8 @@
     <Title>Microsoft Fluent UI Components Library for Blazor on FAST</Title>
     <Description>Authored by the Microsoft FAST team.</Description>
     <SignAssembly>true</SignAssembly>
-    <PackageVersion>0.3.0</PackageVersion>
-    <ReleaseVersion>0.3.0</ReleaseVersion>
+    <PackageVersion>0.4.0</PackageVersion>
+    <ReleaseVersion>0.4.0</ReleaseVersion>
     <SynchReleaseVersion>false</SynchReleaseVersion>
   </PropertyGroup>