fix: refactor tests (#1066)

## Changes Made

- Refactor/optimise tests
- Reduce flakiness
- Add parallel tests (if there's enough CPU capacity)
- Removed explicit worker count when running parallel tests. Defaults to
50% of CPU capacity.

Might want to consider sharding the test across runners in the future as
our tests grows.

packages/prisma/seed/users.ts

@@ -1,3 +1,5 @@
+import { customAlphabet } from 'nanoid';
+
 import { hashSync } from '@documenso/lib/server-only/auth/hash';
 
 import { prisma } from '..';
@@ -11,12 +13,22 @@ type SeedUserOptions = {
   verified?: boolean;
 };
 
+const nanoid = customAlphabet('1234567890abcdef', 10);
+
 export const seedUser = async ({
-  name = `user-${Date.now()}`,
-  email = `user-${Date.now()}@test.documenso.com`,
+  name,
+  email,
   password = 'password',
   verified = true,
 }: SeedUserOptions = {}) => {
+  if (!name) {
+    name = nanoid();
+  }
+
+  if (!email) {
+    email = `${nanoid()}@test.documenso.com`;
+  }
+
   return await prisma.user.create({
     data: {
       name,