devel/renpy: update to 7.4.9

Changes: https://www.renpy.org/release/7.4.9 (see Announcment)
Changes: https://www.renpy.org/doc/html/changelog.html#renpy-7-4-9
Reported by: portscout, Repology

(cherry picked from commit 23c2b6aed90bbe4bb32f5b40633d438b9b851daf)