deprecated function unite_()

[pachadotdev]

Just reporting this message I saw

>         out <- hchart(out, layout = layout_with_lgl)
Warning message:
There was 1 warning in `mutate()`.
ℹ In argument: `color = hex_to_rgba("#d3d3d3", 0.5)`.
Caused by warning:
! `unite_()` was deprecated in tidyr 1.2.0.
ℹ Please use `unite()` instead.
ℹ The deprecated feature was likely used in the highcharter package.
  Please report the issue at <https://github.com/jbkunst/highcharter/issues>.
This warning is displayed once every 8 hours.
Call `lifecycle::last_lifecycle_warnings()` to see where this warning was generated.