multimedia/svt-av1: update to 1.0.0

Changes: https://gitlab.com/AOMediaCodec/SVT-AV1/-/compare/v1.0.0-rc2...v1.0.0
Changes: https://gitlab.com/AOMediaCodec/SVT-AV1/-/releases/v1.0.0
Reported by: Repology, /r/AV1

(cherry picked from commit c395511cdfad67875b41841d9c3208c82baf1dc3)