Update gitversion to 6.4.0 (#1907)

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

Author: renovate[bot]

.config/dotnet-tools.json

@@ -3,7 +3,7 @@
     "isRoot": true,
     "tools": {
         "gitversion.tool": {
-            "version": "6.3.0",
+            "version": "6.4.0",
             "commands": ["dotnet-gitversion"],
             "rollForward": false
         },

Directory.Packages.props

@@ -32,7 +32,7 @@
         <PackageVersion Include="TUnit" Version="0.25.21" />
         <PackageVersion Include="TUnit.Core" Version="0.25.21" />
         <PackageVersion Include="Verify.DiffPlex" Version="3.1.2" />
-        <PackageVersion Include="GitVersion.Tool" Version="6.3.0" />
+        <PackageVersion Include="GitVersion.Tool" Version="6.4.0" />
         <PackageVersion Include="Nuke.Common" Version="9.0.4" />
         <PackageVersion Include="ReportGenerator" Version="5.4.12" />
         <PackageVersion Include="Rocket.Surgery.Nuke" Version="2.9.11" />