mod: update zg dependency

`zg` now supports zig 0.14 dev which this library already uses.

examples/container.zig

@@ -6,9 +6,6 @@ const Key = zterm.Key;
 
 const log = std.log.scoped(.example);
 
-// TODO: maybe inlining the functions should be done as well to reduce the call
-//       stacks (might be important for more complex structures)
-
 pub const ExampleElement = struct {
     pub fn element(this: *@This()) App.Element {
         return .{