User Story
As a user I want to update user information in the Users table.
Description
- Add the PATCH /users/{userId} route to the users Lambda using:
 node tools/lambda-cli.js add-route users PATCH /users/{userId} --body name:string,isAdmin:boolean
- Implement partial update logic using Kysely (db.updateTable('users').set({ name, isAdmin }).where('userID', '=', userId)).
- Test using Swagger and Jest.
Acceptance Criteria
- Route updates user information correctly.
- Swagger returns 200 with updated user data.
- Jest tests confirm updates, invalid IDs, and invalid fields.