fix: revert Gitversion.Tool

Author: loekensgard

build/_build.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
@@ -15,6 +15,6 @@
     <PackageReference Include="Nuke.Common" Version="9.0.1" />
   </ItemGroup>
   <ItemGroup>
-    <PackageDownload Include="GitVersion.Tool" Version="[6.0.5]" />
+    <PackageDownload Include="GitVersion.Tool" Version="[5.12.0]" />
   </ItemGroup>
 </Project>