chore(deps): update avalonia to 12.0.3 (#102)

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

Author: renovate[bot]

src/Directory.Packages.props

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
     <CentralPackageTransitivePinningEnabled>true</CentralPackageTransitivePinningEnabled>
-    <AvaloniaVersion>12.0.1</AvaloniaVersion>
+    <AvaloniaVersion>12.0.3</AvaloniaVersion>
     <SplatVersion>19.3.1</SplatVersion>
   </PropertyGroup>