Update Avalonia to 12.1.0 (#2315)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

src/TEdit5/TEdit5.csproj

@@ -15,11 +15,11 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Avalonia" Version="12.0.5" />
-    <PackageReference Include="Avalonia.Desktop" Version="12.0.5" />
+    <PackageReference Include="Avalonia" Version="12.1.0" />
+    <PackageReference Include="Avalonia.Desktop" Version="12.1.0" />
     <PackageReference Include="ReactiveUI.Avalonia" Version="12.0.3" />
-    <PackageReference Include="Avalonia.Themes.Fluent" Version="12.0.5" />
-    <PackageReference Include="Avalonia.Fonts.Inter" Version="12.0.5" />
+    <PackageReference Include="Avalonia.Themes.Fluent" Version="12.1.0" />
+    <PackageReference Include="Avalonia.Fonts.Inter" Version="12.1.0" />
     <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
     <PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" Version="11.3.18" />
     <PackageReference Include="bodong.Avalonia.PropertyGrid" Version="11.3.11.1" />