Bump Microsoft.NETFramework.ReferenceAssemblies

Bumps [Microsoft.NETFramework.ReferenceAssemblies](https://github.com/Microsoft/dotnet) from 1.0.0-preview.2 to 1.0.0. - [Release notes](https://github.com/Microsoft/dotnet/releases) - [Commits](https://github.com/Microsoft/dotnet/commits) Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

Directory.Build.props

@@ -1,5 +1,5 @@
 <Project>
  <ItemGroup>
- <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.0-preview.2" />
+ <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.0" />
  </ItemGroup>
 </Project>