Bump OxyPlot.Wpf from 2.1.2 to 2.2.0 in /src

Bumps [OxyPlot.Wpf](https://github.com/oxyplot/oxyplot) from 2.1.2 to 2.2.0.
- [Release notes](https://github.com/oxyplot/oxyplot/releases)
- [Changelog](https://github.com/oxyplot/oxyplot/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/oxyplot/oxyplot/commits)

---
updated-dependencies:
- dependency-name: OxyPlot.Wpf
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/Orc.Plot/Orc.Plot.csproj

@@ -24,7 +24,7 @@
     <PackageReference Include="ModuleInit.Fody" Version="2.1.1" PrivateAssets="all" />
     <PackageReference Include="Obsolete.Fody" Version="5.3.0" PrivateAssets="all" />
     <PackageReference Include="Orc.Controls" Version="5.0.5" />
-    <PackageReference Include="OxyPlot.Wpf" Version="2.1.2" />
+    <PackageReference Include="OxyPlot.Wpf" Version="2.2.0" />
   </ItemGroup>
 
   <Import Project="$(MSBuildProjectDirectory)\..\Directory.build.nullable.props" Condition="Exists('$(MSBuildProjectDirectory)\..\Directory.build.nullable.props')" />