Build Fix

Author: joelsteventurner

Tests/ProxyServiceTests.Proxy.AuthHeaderProvider/Intent.Metadata/Services/Services.designer.config

@@ -29,7 +29,7 @@
     <packageReference packageId="04c6a15c-a669-4006-ac8d-24273331eadf" include="ProxyServiceTests.Proxy.AuthHeaderProvider.Services" isExternal="false">
       <path>ProxyServiceTests.Proxy.AuthHeaderProvider.Services/ProxyServiceTests.Proxy.AuthHeaderProvider.Services.pkg.config</path>
     </packageReference>
-    <packageReference packageId="a9393602-131c-4f96-aca1-20d7cd1870ca" include="ProxyServiceTests.Proxy.AuthHeaderProvider.ServiceProxies" isExternal="false">
+    <packageReference packageId="a9393602-131c-4f96-aca1-20d7cd1870ca" include="ProxyServiceTests.Proxy.AuthHeaderProvider.ServiceProxies" isExternal="true">
       <path>../Service Proxies/ProxyServiceTests.Proxy.AuthHeaderProvider.ServiceProxies/ProxyServiceTests.Proxy.AuthHeaderProvider.ServiceProxies.pkg.config</path>
     </packageReference>
   </packageReferences>