Bump Microsoft.Windows.CsWinRT from 2.0.2 to 2.0.3 (#160)

Bumps [Microsoft.Windows.CsWinRT](https://github.com/microsoft/cswinrt) from 2.0.2 to 2.0.3.
- [Release notes](https://github.com/microsoft/cswinrt/releases)
- [Changelog](https://github.com/microsoft/CsWinRT/blob/master/docs/breakingchanges-rc2.md)
- [Commits](https://github.com/microsoft/cswinrt/commits)

---
updated-dependencies:
- dependency-name: Microsoft.Windows.CsWinRT
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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src/Applications/UUPMediaCreator.Broker/UUPMediaCreator.Broker.csproj

@@ -24,7 +24,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Windows.CsWinRT" Version="2.0.2" />
+    <PackageReference Include="Microsoft.Windows.CsWinRT" Version="2.0.3" />
     <Manifest Include="$(ApplicationManifest)" />
   </ItemGroup>