Update coreclr-debug packages for 1.3 release.

Author: chuckries

package.json

@@ -1,7 +1,7 @@
 {
   "name": "csharp",
   "publisher": "ms-vscode",
-  "version": "1.3.0-beta2",
+  "version": "1.3.0-beta3",
   "description": "C# for Visual Studio Code (powered by OmniSharp).",
   "displayName": "C#",
   "author": "Microsoft Corporation",

src/coreclr-debug/install.ts

@@ -162,9 +162,9 @@ export class DebugInstaller
                 emitEntryPoint: true
             },
             dependencies: {
-                "Microsoft.VisualStudio.clrdbg": "14.0.25504-preview-3105261",
-                "Microsoft.VisualStudio.clrdbg.MIEngine": "14.0.30705-preview-1",
-                "Microsoft.VisualStudio.OpenDebugAD7": "1.0.20705-preview-1",
+                "Microsoft.VisualStudio.clrdbg": "14.0.25520-preview-3139256",
+                "Microsoft.VisualStudio.clrdbg.MIEngine": "14.0.30715-preview-1",
+                "Microsoft.VisualStudio.OpenDebugAD7": "1.0.20720-preview-1",
                 "NETStandard.Library": "1.6.0",
                 "Newtonsoft.Json": "7.0.1",
                 "Microsoft.VisualStudio.Debugger.Interop.Portable": "1.0.1",