Bump Microsoft.NETFramework.ReferenceAssemblies from 1.0.2 to 1.0.3 (#77

)

Bumps [Microsoft.NETFramework.ReferenceAssemblies](https://github.com/Microsoft/dotnet) from 1.0.2 to 1.0.3.
- [Release notes](https://github.com/Microsoft/dotnet/releases)
- [Commits](https://github.com/Microsoft/dotnet/commits)

---
updated-dependencies:
- dependency-name: Microsoft.NETFramework.ReferenceAssemblies
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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src/Ookii.Dialogs.WinForms/Ookii.Dialogs.WinForms.csproj

@@ -55,7 +55,7 @@
   </ItemGroup>  
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net462' ">
-    <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.2" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.3" PrivateAssets="All" />
 
     <Reference Include="System" />
     <Reference Include="System.Core" />