Update branding to 3.1.4 (#20110)

* Update branding to 3.1.4

* Disable targeting pack tests

* Use 3.1.103 SDK

Author: wtgodbe

Directory.Build.props

@@ -85,10 +85,7 @@
     <TargetingPackInstallerBaseName>aspnetcore-targeting-pack</TargetingPackInstallerBaseName>
 
     <!-- Produce targeting pack installers/packages once per major.minor except in extraordinary cases i.e. 3.1.3. -->
-    <!-- We can remove the 3.1.3 line from any branch other than release/3.1 and from here after 3.1.3 is released. -->
     <IsTargetingPackBuilding Condition=" '$(DotNetBuildFromSource)' == 'true' ">false</IsTargetingPackBuilding>
-    <IsTargetingPackBuilding
-        Condition=" '$(IsTargetingPackBuilding)' == '' AND '$(VersionPrefix)' == '3.1.3' ">true</IsTargetingPackBuilding>
     <IsTargetingPackBuilding
         Condition=" '$(IsTargetingPackBuilding)' == '' AND '$(AspNetCorePatchVersion)' != '0' ">false</IsTargetingPackBuilding>
     <IsTargetingPackBuilding Condition=" '$(IsTargetingPackBuilding)' == '' ">true</IsTargetingPackBuilding>