aseprite: fix build by adding libxcb

+2
+2
pkgs/by-name/as/aseprite/package.nix
··· 22 libXext, 23 libXi, 24 libXxf86vm, 25 ninja, 26 pcre2, 27 pixman, ··· 87 libXext 88 libXi 89 libXxf86vm 90 pcre2 91 pixman 92 skia-aseprite
··· 22 libXext, 23 libXi, 24 libXxf86vm, 25 + libxcb, 26 ninja, 27 pcre2, 28 pixman, ··· 88 libXext 89 libXi 90 libXxf86vm 91 + libxcb 92 pcre2 93 pixman 94 skia-aseprite