Reinstate globls.json change (#12)

Reinstate change to globals.json to match level of .NET we have available

---------

Co-authored-by: Anup Kodlekere <100858233+anup-kodlekere@users.noreply.github.com>

Author: nealef

build-files/runner-s390x.patch

@@ -240,4 +240,15 @@ index 056a312..8370922 100644
 +        <MSBuild Targets="Publish" Projects="@(ProjectFiles)" BuildInParallel="false" StopOnFirstFailure="true" Properties="Configuration=$(BUILDCONFIG);PackageRuntime=$(PackageRuntime);Version=$(RunnerVersion);$(PublishRuntimeIdentifier);PublishDir=$(MSBuildProjectDirectory)/../_layout/bin" />
          <Exec Command="%22$(DesktopMSBuild)%22 Runner.Service/Windows/RunnerService.csproj /p:Configuration=$(BUILDCONFIG) /p:PackageRuntime=$(PackageRuntime) /p:OutputPath=%22$(MSBuildProjectDirectory)/../_layout/bin%22" ConsoleToMSBuild="true" Condition="'$(PackageRuntime)' == 'win-x64' Or '$(PackageRuntime)' == 'win-x86' Or '$(PackageRuntime)' == 'win-arm64'" />
      </Target>
- 
+
+diff --git a/src/global.json b/src/global.json
+index b014aea..70e3dcc 100644
+--- a/src/global.json
++++ b/src/global.json
+@@ -1,5 +1,5 @@
+ {
+   "sdk": {
+-    "version": "6.0.419"
++    "version": "6.0.126"
+   }
+ }