Fixup site extensions 3.1 versions (#31809)

Author: John Luo

eng/Versions.props

@@ -212,7 +212,7 @@
     <!-- Packages from 2.1, 3.1, and 5.0 branches used for site extension build. -->
     <MicrosoftAspNetCoreAzureAppServicesSiteExtension21Version>2.1.1</MicrosoftAspNetCoreAzureAppServicesSiteExtension21Version>
     <MicrosoftAspNetCoreAzureAppServicesSiteExtension22Version>2.2.0</MicrosoftAspNetCoreAzureAppServicesSiteExtension22Version>
-    <MicrosoftAspNetCoreAzureAppServicesSiteExtension31Version>3.1.14</MicrosoftAspNetCoreAzureAppServicesSiteExtension31Version>
+    <MicrosoftAspNetCoreAzureAppServicesSiteExtension31Version>3.1.14-servicing-21166-8</MicrosoftAspNetCoreAzureAppServicesSiteExtension31Version>
     <MicrosoftAspNetCoreAzureAppServicesSiteExtension31x64Version>$(MicrosoftAspNetCoreAzureAppServicesSiteExtension31Version)</MicrosoftAspNetCoreAzureAppServicesSiteExtension31x64Version>
     <MicrosoftAspNetCoreAzureAppServicesSiteExtension31x86Version>$(MicrosoftAspNetCoreAzureAppServicesSiteExtension31Version)</MicrosoftAspNetCoreAzureAppServicesSiteExtension31x86Version>
     <MicrosoftAspNetCoreAzureAppServicesSiteExtension50Version>5.0.0-rtm-20529-7</MicrosoftAspNetCoreAzureAppServicesSiteExtension50Version>