React to updated CoreCLR packages

aspnet/Coherence#97

Author: JunTaoLuo

src/Microsoft.AspNetCore.WebSockets.Protocol/project.json

@@ -27,7 +27,7 @@
         "System.Resources.ResourceManager": "4.0.1-*",
         "System.Runtime.InteropServices": "4.1.0-*",
         "System.Runtime.Extensions": "4.1.0-*",
-        "System.Security.Cryptography.Algorithms": "4.1.0-*",
+        "System.Security.Cryptography.Algorithms": "4.2.0-*",
         "System.Text.Encoding.Extensions": "4.0.11-*",
         "System.Threading": "4.0.11-*",
         "System.Threading.Tasks": "4.0.11-*",