hotfix: anime/manga relations. skip empty "entry boxes"

Merge pull request #552 from jikan-me/bugfix/entry-relations

Fixes #551

fix mal april fools 2024 affecting score

fix tests

company: add resource links #538

fixes #529

fix tests

Merge pull request #522 from jikan-me/bugfix/anime-videos-episodes

fixes #520 #521

Merge pull request #518 from ToshY/bug/517-undefined-properties-voice…

…actingrole

updated properties in getters for VoiceActingRole and AnimeStaffPosition

fix tests v2