Use .NET 7 Preview 6.

bgrainger · bgrainger · commit e03236705a1c · 2022-07-13T22:10:10.000-07:00
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
@@ -1,5 +1,5 @@
 variables:
-  DotNetCoreSdkVersion: '7.0.100-preview.5.22307.18'
+  DotNetCoreSdkVersion: '7.0.100-preview.6.22352.1'
   NUGET_PACKAGES: '$(Pipeline.Workspace)/.nuget/packages'
 
 jobs:
