Update shim version to be 2.1 (#10424)

src/services/shims.ts

@@ -1203,6 +1203,6 @@ namespace TypeScript.Services {
 // TODO: it should be moved into a namespace though.
 
 /* @internal */
-const toolsVersion = "1.9";
+const toolsVersion = "2.1";
 
 /* tslint:enable:no-unused-variable */