Fix all test cases for user routes

[JawherKl]

This merge request resolves the issues with the user route test cases for PUT and DELETE endpoints. The following changes were made:

1. Fixed the PUT test for updating user details by handling password hashing.
2. Updated the DELETE test to handle invalid and non-existent user scenarios properly.
3. Ensured that the tests now properly validate user data and return the correct responses for valid/invalid cases.

Related Issues:

• Fixed invalid user ID input handling.
• Addressed issues with password hashing in the update user route test.

Testing:

• All tests for user routes (PUT and DELETE) are now passing successfully.