test: add accept invitation invalid token tests

packages/e2e-tests/fixtures/postgres-client-config.js

@@ -0,0 +1,11 @@
+const { Client } = require('pg');
+
+const client = new Client({
+    host: process.env.POSTGRES_HOST,
+    user: process.env.POSTGRES_USERNAME,
+    port: process.env.POSTGRES_PORT,
+    password: process.env.POSTGRES_PASSWORD,
+    database: process.env.POSTGRES_DATABASE
+});
+
+exports.client = client;