multimedia/ccextractor: update to 0.96.5

• rust now mandatory
• GUI rewritten in flutter, which we do not support unfortunately
• hard subtitle extraction works now

Changelog: https://github.com/CCExtractor/ccextractor/releases/tag/v0.96.5
Changelog: https://github.com/CCExtractor/ccextractor/releases/tag/v0.96.4
Changelog: https://github.com/CCExtractor/ccextractor/releases/tag/v0.96.3
Changelog: https://github.com/CCExtractor/ccextractor/releases/tag/v0.96.2
Changelog: https://github.com/CCExtractor/ccextractor/releases/tag/v0.96.1
Changelog: https://github.com/CCExtractor/ccextractor/releases/tag/v0.96