Replace DTE to DTE2 in Edition and Version variables

Author: Reavert

VisualStudioDiscordRPC.Shared/Variables/EditionVariable.cs

@@ -1,12 +1,12 @@
-using EnvDTE;
+using EnvDTE80;
 
 namespace VisualStudioDiscordRPC.Shared.Variables
 {
     public class EditionVariable : Variable
     {
         private readonly string _edition;
 
-        public EditionVariable(DTE dte)
+        public EditionVariable(DTE2 dte)
         {
             Microsoft.VisualStudio.Shell.ThreadHelper.ThrowIfNotOnUIThread();
             _edition = dte.Edition;

VisualStudioDiscordRPC.Shared/Variables/VersionVariable.cs

@@ -1,4 +1,4 @@
-using EnvDTE;
+using EnvDTE80;
 using VisualStudioDiscordRPC.Shared.Utils;
 
 namespace VisualStudioDiscordRPC.Shared.Variables
@@ -7,7 +7,7 @@ public class VersionVariable : Variable
     {
         private readonly string _version;
 
-        public VersionVariable(DTE dte) 
+        public VersionVariable(DTE2 dte) 
         {
             Microsoft.VisualStudio.Shell.ThreadHelper.ThrowIfNotOnUIThread();
             _version = dte.Version;