add second special for Tensei Shitara Slime Datta Ken (2024)

[CommanderBubble]

AniDB	TVDB/TMDB/IMDB	Notes
https://anidb.net/anime/17709	https://thetvdb.com/index.php?tab=series&id=352408	There is currently no existing entry for this on TVDB, however without this mapping it fails to remap this episode and duplicates it as special 2. This is the likely episode entry for the special.

[BrutuZ]

Since the show/season is locked, surely there's a ticket for adding it already