Bump Microsoft.Net.Compilers.Toolset from 4.0.0 to 4.0.1 (#129)

Bumps [Microsoft.Net.Compilers.Toolset](https://github.com/dotnet/roslyn) from 4.0.0 to 4.0.1.
- [Release notes](https://github.com/dotnet/roslyn/releases)
- [Changelog](https://github.com/dotnet/roslyn/blob/main/docs/Breaking%20API%20Changes.md)
- [Commits](https://github.com/dotnet/roslyn/commits)

---
updated-dependencies:
- dependency-name: Microsoft.Net.Compilers.Toolset
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Directory.Build.props

@@ -27,7 +27,7 @@
     <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.2" PrivateAssets="all" />
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="all" />
     <PackageReference Include="Nerdbank.GitVersioning" Version="3.4.244" PrivateAssets="all" />
-    <PackageReference Include="Microsoft.Net.Compilers.Toolset" Version="4.0.0" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.Net.Compilers.Toolset" Version="4.0.1" PrivateAssets="all" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.354" PrivateAssets="all" />
   </ItemGroup>