Bump down-level SiteExtension versions (#34314)

Author: dougbu

eng/Versions.props

@@ -212,10 +212,10 @@
     <!-- 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>3.1.15-servicing-21215-12</MicrosoftAspNetCoreAzureAppServicesSiteExtension31Version>
+    <MicrosoftAspNetCoreAzureAppServicesSiteExtension31Version>3.1.17-servicing-21318-8</MicrosoftAspNetCoreAzureAppServicesSiteExtension31Version>
     <MicrosoftAspNetCoreAzureAppServicesSiteExtension31x64Version>$(MicrosoftAspNetCoreAzureAppServicesSiteExtension31Version)</MicrosoftAspNetCoreAzureAppServicesSiteExtension31x64Version>
     <MicrosoftAspNetCoreAzureAppServicesSiteExtension31x86Version>$(MicrosoftAspNetCoreAzureAppServicesSiteExtension31Version)</MicrosoftAspNetCoreAzureAppServicesSiteExtension31x86Version>
-    <MicrosoftAspNetCoreAzureAppServicesSiteExtension50Version>5.0.6-servicing-21223-5</MicrosoftAspNetCoreAzureAppServicesSiteExtension50Version>
+    <MicrosoftAspNetCoreAzureAppServicesSiteExtension50Version>5.0.8-servicing-21318-5</MicrosoftAspNetCoreAzureAppServicesSiteExtension50Version>
     <MicrosoftAspNetCoreAzureAppServicesSiteExtension50x64Version>$(MicrosoftAspNetCoreAzureAppServicesSiteExtension50Version)</MicrosoftAspNetCoreAzureAppServicesSiteExtension50x64Version>
     <MicrosoftAspNetCoreAzureAppServicesSiteExtension50x86Version>$(MicrosoftAspNetCoreAzureAppServicesSiteExtension50Version)</MicrosoftAspNetCoreAzureAppServicesSiteExtension50x86Version>
     <!-- 3rd party dependencies -->