Update version to 2.1.1

Author: myloveCc

src/NETCore.Encrypt/NETCore.Encrypt.csproj

@@ -14,7 +14,7 @@
     <RepositoryType>Github</RepositoryType>
     <AssemblyVersion>2.1.0.0</AssemblyVersion>
     <FileVersion>2.1.0.0</FileVersion>
-    <Version>2.1.0.0</Version>
+    <Version>2.1.1.0</Version>
     <PackageReleaseNotes>1: Changed initialization of random generator
 2: Changed documentation from Chinese to English
 </PackageReleaseNotes>