Port to zig 0.17.0

src/engine/VkAllocator.zig

@@ -46,7 +46,7 @@ interface: vk.AllocationCallbacks,
 // around it, but it would add much complexity. Instead, we allocate everything
 // with the same, relatively big alignment and hope for the best.
 const actual_alignment: std.mem.Alignment = .@"16";
-const debug = @import("builtin").mode == .Debug;
+const debug = @import("builtin").mode == .debug;
 const stack_frames: usize = if (debug and std.debug.sys_can_stack_trace) 6 else 0;
 
 const log = std.log.scoped(.vk_allocator);