[ci] Use nuget-msi-convert/job/v3.yml (#7032)

Context: xamarin/yaml-templates#180

Use v3 of the .msi installer generation templates.  This new template
version adds support for a somewhat recent rework in dotnet/arcade, and
updates the manifest pack versioning schema.

Author: pjcollins

Diff for: build-tools/automation/azure-pipelines.yaml

@@ -1374,7 +1374,7 @@ stages:
       usePipelineArtifactTasks: true
 
   # Check - "Xamarin.Android (Prepare .NET Release Convert NuGet to MSI)"
-  - template: nuget-msi-convert/job/v2.yml@yaml
+  - template: nuget-msi-convert/job/v3.yml@yaml
     parameters:
       yamlResourceName: yaml
       dependsOn: sign_net_mac_win
@@ -1383,7 +1383,6 @@ stages:
         !*Darwin*
       propsArtifactName: $(NuGetArtifactName)
       signType: $(MicroBuildSignType)
-      runInParallel: false
       postConvertSteps:
       - task: DownloadPipelineArtifact@2
         inputs: