z-order of gridlines

[hemisemidemipresent]

Describe the bug
Despite the gridlines.line.zorder being lower than that of the stars, the gridlines are still above the star

To Reproduce

from starplot import Star, DSO, MapPlot, Projection
from starplot.styles import PlotStyle, PolygonStyle, extensions

style = PlotStyle().extend(
    extensions.BLUE_LIGHT,
    extensions.MAP,
)
p = MapPlot(
    projection=Projection.STEREO_NORTH,
    dec_min=75,
    dec_max=90,
    style=style,
    resolution=4000,
    hide_colliding_labels=False
)
p.gridlines()

p.stars(
    where=[Star.magnitude < 6],
    where_labels=[ Star.magnitude == 999],
    bayer_labels=True
)

p.export("test.png", padding=0.2, transparent=True)

Expected behavior
The gridlines should be below the star, but they are above the star
Screenshots
Polaris has gridlines on it

Environment Details (please complete the following information):

• Starplot version: 0.12.1
• Python version: 3.11.8
• Matplotlib version: 3.9.2

[steveberardi]

Which version of cartopy are you using? I've noticed this behavior with versions 0.23 or later, but not with version 0.22. So, I suspect this may be a bug with cartopy, but haven't fully investigated to confirm.

[hemisemidemipresent]

currently mine is on 0.23.0