devel/sdl12-compat: update to 1.2.52

Changes: https://github.com/libsdl-org/sdl12-compat/releases/tag/release-1.2.52
Changes: https://github.com/libsdl-org/sdl12-compat/compare/b3328aa...release-1.2.52
(cherry picked from commit 52db703efdfccbaf56b9fadbe7c3a7d2cfa43c3c)