fix: bypass CAPTCHA for allanime scraper & fix update_script

[pix3l-p33p3r]

Description

This PR fixes two recent breaking issues:

1. Episode is released, but no valid sources!: Allanime implemented a new CAPTCHA challenge that blocked API scraping. This PR merges the fixes from coolans_patches (changes referrer, encryption key, and adjusts payload).
2. Connection error on ani-cli -U: raw.githubusercontent.com fails to resolve in certain environments. This PR patches update_script to pull the raw script directly via the GitHub API using Accept: application/vnd.github.v3.raw.

Checklist

• any anime playing
• next, prev and replay work
• -c history and continue work

[Derisis13]

1. we'll merge the original PR, opening a new one with copied (plagarized) contents is useless
2. why? Haven't seen it fail in my 5 years of working on the project.

Also you have merge conflicts... We couldn't even merge if we wanted to.

[pix3l-p33p3r]

1. i dint copy any shit
2. bcs its not working on my system and that was the fix; yeah i get that it hasent failed on your end for me it did