Bump ReportGenerator from 4.8.8 to 4.8.9

Bumps [ReportGenerator](https://github.com/danielpalme/ReportGenerator) from 4.8.8 to 4.8.9.
- [Release notes](https://github.com/danielpalme/ReportGenerator/releases)
- [Commits](https://github.com/danielpalme/ReportGenerator/compare/v4.8.8...v4.8.9)

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

UnitTests/UnitTests.csproj

@@ -16,7 +16,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.10.0" />
-    <PackageReference Include="ReportGenerator" Version="4.8.8" />
+    <PackageReference Include="ReportGenerator" Version="4.8.9" />
     <PackageReference Include="System.Collections" Version="4.3.0" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">