[release/2.1] Update korebuild to fix signcheck errors (#28005)

* Update korebuild to fix signcheck errors

Author: mmitche

build/dependencies.props

@@ -16,7 +16,7 @@
     <!-- Determined by build tools -->
     <InternalAspNetCoreSdkPackageVersion>$(KoreBuildVersion)</InternalAspNetCoreSdkPackageVersion>
     <InternalAspNetCoreSiteExtensionSdkPackageVersion>$(KoreBuildVersion)</InternalAspNetCoreSiteExtensionSdkPackageVersion>
-    <InternalAspNetCoreSdkPackageVersion Condition=" '$(KoreBuildVersion)' == '' ">2.1.7-build-20200221.1</InternalAspNetCoreSdkPackageVersion>
+    <InternalAspNetCoreSdkPackageVersion Condition=" '$(KoreBuildVersion)' == '' ">2.1.7-build-20201119.1</InternalAspNetCoreSdkPackageVersion>
   </PropertyGroup>
 
   <!-- These are package versions that should not be overridden or updated by automation. -->

korebuild-lock.txt

@@ -1,2 +1,2 @@
-version:2.1.7-build-20200221.1
-commithash:96fb43f7c4a724d7af26b053240182760ac80a9b
+version:2.1.7-build-20201119.1
+commithash:8212674c2abff7b51f99422c9bdb1a81b90d9dc1