Bump Plotly.NET from 4.2.0 to 5.1.0

Bumps [Plotly.NET](https://github.com/plotly/Plotly.NET) from 4.2.0 to 5.1.0.
- [Release notes](https://github.com/plotly/Plotly.NET/releases)
- [Changelog](https://github.com/plotly/Plotly.NET/blob/dev/RELEASE_NOTES.md)
- [Commits](plotly/Plotly.NET@4.2.0...5.1.0)

---
updated-dependencies:
- dependency-name: Plotly.NET
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

BitFaster.Caching.ThroughputAnalysis/BitFaster.Caching.ThroughputAnalysis.csproj

@@ -27,8 +27,8 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="8.0.0" />
-    <PackageReference Include="Plotly.NET" Version="4.2.0" />
-    <PackageReference Include="Plotly.NET.ImageExport" Version="5.0.1" />
+    <PackageReference Include="Plotly.NET" Version="5.1.0" />
+    <PackageReference Include="Plotly.NET.ImageExport" Version="6.0.0" />
   </ItemGroup>
 
   <ItemGroup>