zaz: fix build

commit 7aeac03 (PR #386495) dropped libX11 and libGLU from propagatedBuildInputs in SDL_compat, and #389106 pointed SDL to SDL_compat, which broke this build

Hydra failure: https://hydra.nixos.org/build/292774821

Grimmauld 8f57521d 2341cd6a

+2
+2
pkgs/by-name/za/zaz/package.nix
··· 6 SDL, 7 SDL_image, 8 libgbm, 9 libtheora, 10 libvorbis, 11 libogg, ··· 29 (lib.getDev SDL) 30 SDL_image 31 libgbm 32 libtheora 33 libvorbis.dev 34 libogg
··· 6 SDL, 7 SDL_image, 8 libgbm, 9 + libGL, 10 libtheora, 11 libvorbis, 12 libogg, ··· 30 (lib.getDev SDL) 31 SDL_image 32 libgbm 33 + libGL 34 libtheora 35 libvorbis.dev 36 libogg