Bump Microsoft.Bcl.AsyncInterfaces from 1.0.0 to 1.1.1 in /src

Bumps [Microsoft.Bcl.AsyncInterfaces](https://github.com/dotnet/corefx) from 1.0.0 to 1.1.1.
- [Release notes](https://github.com/dotnet/corefx/releases)
- [Commits](dotnet/corefx@v1.0.0...v1.1.1)

Signed-off-by: dependabot[bot] <support@github.com>

src/Microsoft.VisualStudio.Threading/Microsoft.VisualStudio.Threading.csproj

@@ -44,7 +44,7 @@
     </PackageReference>
     <PackageReference Include="Roslyn.Diagnostics.Analyzers" Version="2.9.8" PrivateAssets="all" />
     <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.3" />
-    <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="1.0.0" />
+    <PackageReference Include="Microsoft.Bcl.AsyncInterfaces" Version="1.1.1" />
     <PackageReference Include="Microsoft.VisualStudio.Validation" Version="15.5.31" />
     <PackageReference Include="Microsoft.Win32.Registry" Version="4.7.0" />
     <PackageReference Include="MicroBuild.VisualStudio" Version="$(MicroBuildVersion)" PrivateAssets="all" />