Fix binding redirect.

Author: yfakariya

test/MsgPack.UnitTest.BclExtensions/app.config

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <configuration>
   <runtime>
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
@@ -8,8 +8,8 @@
       </dependentAssembly>
       <dependentAssembly>
         <assemblyIdentity name="System.Collections.Immutable" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-1.2.0.0" newVersion="1.2.0.0" />
+        <bindingRedirect oldVersion="0.0.0.0-1.2.2.0" newVersion="1.2.2.0" />
       </dependentAssembly>
     </assemblyBinding>
   </runtime>
-</configuration>
+</configuration>