audio/mousai-devel: update to 0.7.0

Changes: https://github.com/SeaDve/Mousai/compare/bcc1ecb...v0.7.0
Changes: https://github.com/SeaDve/Mousai/releases/tag/v0.7.0
Reported by: GitHub (watch releases)

(cherry picked from commit f573063e17f5dadbf692a3c85b274084c350b79a)