🐞 Fix migration conflict caused by duplicate 0022 migrations in introduction app

[mohityadav8]

PR Description

This PR resolves a migration conflict in the introduction app caused by two migrations sharing the same number 0022.

Conflicting migrations:

0022_remove_owasp2017_lab_models.py
0022_remove_owasp2021_lab_models.py

Both migrations originally depended on:

("introduction", "0021_csrf_user_tbl")

This caused Django to be unable to determine the correct migration order, resulting in a migration conflict.

Fix

The dependency of 0022_remove_owasp2021_lab_models.py has been updated to depend on:

("introduction", "0022_remove_owasp2017_lab_models")

This chains the migrations properly and ensures Django applies them in the correct sequence.

Result
Eliminates migration numbering conflict
Ensures consistent migration order
Prevents Django migration crashes
Related Issue

Closes #505