Bump Microsoft.CodeAnalysis.CSharp.Scripting from 4.3.1 to 4.4.0 (#1239)

Bumps [Microsoft.CodeAnalysis.CSharp.Scripting](https://github.com/dotnet/roslyn) from 4.3.1 to 4.4.0.
- [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/Visual-Studio-2019-Version-16.0-Preview-4.4)

---
updated-dependencies:
- dependency-name: Microsoft.CodeAnalysis.CSharp.Scripting
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Directory.Packages.props

@@ -34,7 +34,7 @@
         <PackageVersion Include="xunit.runner.visualstudio" Version="2.4.5"/>
         <PackageVersion Include="Statiq.Core" Version="1.0.0-beta.48"/>
         <PackageVersion Include="HtmlAgilityPack" Version="1.11.43"/>
-        <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Scripting" Version="4.3.1"/>
+        <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Scripting" Version="4.4.0"/>
         <PackageVersion Include="Statiq.App" Version="1.0.0-beta.65"/>
         <PackageVersion Include="Statiq.Feeds" Version="1.0.0-beta.65"/>
         <PackageVersion Include="Statiq.Markdown" Version="1.0.0-beta.62"/>