Update reportgenerator to 5.5.9 (#1485)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.config/dotnet-tools.json

@@ -8,7 +8,7 @@
             "rollForward": false
         },
         "dotnet-reportgenerator-globaltool": {
-            "version": "5.5.6",
+            "version": "5.5.9",
             "commands": ["reportgenerator"],
             "rollForward": false
         },

Directory.Packages.props

@@ -25,7 +25,7 @@
         <PackageVersion Include="Polyfill" Version="8.9.1" />
         <PackageVersion Include="GitVersion.Tool" Version="6.7.0" />
         <PackageVersion Include="Nuke.Common" Version="9.0.4" />
-        <PackageVersion Include="ReportGenerator" Version="5.5.6" />
+        <PackageVersion Include="ReportGenerator" Version="5.5.9" />
         <PackageVersion Include="Rocket.Surgery.Nuke" Version="2.9.12" />
         <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="5.3.0" />
         <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="5.3.0" />