Fix build on Apple Silicon when linking to GLFW

This also updates the library to GLFW 3.3.8
This includes the lib-universal static library, rather than just the
Intel one (lib-x86_64), so software building with GLFW on Apple Silicon
will work again.

vendor/glfw/constants.odin

@@ -4,7 +4,7 @@ package glfw
 /* Versions */
 VERSION_MAJOR    :: 3
 VERSION_MINOR    :: 3
-VERSION_REVISION :: 4
+VERSION_REVISION :: 8
 
 /* Booleans */
 TRUE  :: true