Bump OpenCover from 4.6.519 to 4.7.922

Bumps [OpenCover](https://github.com/opencover/opencover) from 4.6.519 to 4.7.922.
- [Release notes](https://github.com/opencover/opencover/releases)
- [Changelog](https://github.com/OpenCover/opencover/blob/master/ReleaseNotes.tmp)
- [Commits](OpenCover/opencover@4.6.519...4.7.922)

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

UnitTests/UnitTests.csproj

@@ -25,7 +25,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.4" />
-    <PackageReference Include="OpenCover" Version="4.6.519" />
+    <PackageReference Include="OpenCover" Version="4.7.922" />
     <PackageReference Include="System.Data.SQLite.Core" Version="1.0.113.7" />
   </ItemGroup>