Add ESS Next as an E2E environment (#1372)

Add ESS Next as a e2e env

Author: NSeydoux

packages/internal-test-env/src/index.ts

@@ -32,6 +32,7 @@ import {
 } from "@inrupt/solid-client";
 
 export const availableEnvironments = [
+  "ESS Next" as const,
   "ESS Release-2-4" as const,
   "ESS Dev-2-4" as const,
   "ESS Release-2-3" as const,