GitHub Import fails to download attachments with new URL format

GitHub changed its attachment URL format from: https://user-images.githubusercontent.com/[ID]/[GUID].png

to:

https://github.com/user-attachments/assets/[GUID]

The GitHub Import functionality is not handling the new URL format, which results in attachments still being linked to the GitHub domain after the migration.

Current behavior:

• Attachments with the old URL format download successfully and links are updated to GiLab domain.
• Attachments with the new URL format fail to download and URL still points to GitHub domain

Expected behavior:

• GitHub Import should successfully download attachments regardless of the URL format used