Update Versions.props (#141)

eng/Versions.props

@@ -10,6 +10,7 @@
     <!-- Opt-in repo features -->
     <UsingToolSymbolUploader>true</UsingToolSymbolUploader>
     <UsingToolNetFrameworkReferenceAssemblies>true</UsingToolNetFrameworkReferenceAssemblies>
+    <UsingToolNuGetRepack>true</UsingToolNuGetRepack>
 
     <!-- Dependencies -->
     <SystemCollectionsImmutableVersion>1.5.0-preview2-26401-03</SystemCollectionsImmutableVersion>