Update branding to 6.0.8 (#42583)

* Update branding to 6.0.8

* release/6.0] Give up on Build.Server.Amd64.VS2019.BT.Open

- `cherry-pick` part of 0394ac7b
- was "Try out 1es images (#41400)"

Co-authored-by: Doug Bunting <6431421+dougbu@users.noreply.github.com>

.azure/pipelines/jobs/default-build.yml

@@ -108,12 +108,7 @@ jobs:
       ${{ if eq(parameters.agentOs, 'Windows') }}:
         ${{ if eq(variables['System.TeamProject'], 'public') }}:
           name: NetCore1ESPool-Svc-Public
-          ${{ if ne(parameters.isTestingJob, true) }}:
-            # Visual Studio Build Tools
-            demands: ImageOverride -equals Build.Server.Amd64.VS2019.BT.Open
-          ${{ if eq(parameters.isTestingJob, true) }}:
-            # Visual Studio Enterprise - contains some stuff, like SQL Server and IIS Express, that we use for testing
-            demands: ImageOverride -equals Build.Server.Amd64.VS2019.Open
+          demands: ImageOverride -equals 1es-windows-2019-open
         ${{ if eq(variables['System.TeamProject'], 'internal') }}:
           name: NetCore1ESPool-Svc-Internal
           # Visual Studio Enterprise - contains some stuff, like SQL Server and IIS Express, that we use for testing

eng/Versions.props

@@ -8,8 +8,8 @@
   <PropertyGroup Label="Version settings">
     <AspNetCoreMajorVersion>6</AspNetCoreMajorVersion>
     <AspNetCoreMinorVersion>0</AspNetCoreMinorVersion>
-    <AspNetCorePatchVersion>7</AspNetCorePatchVersion>
-    <ValidateBaseline>true</ValidateBaseline>
+    <AspNetCorePatchVersion>8</AspNetCorePatchVersion>
+    <ValidateBaseline>false</ValidateBaseline>
     <!--
         When StabilizePackageVersion is set to 'true', this branch will produce stable outputs for 'Shipping' packages
     -->