Fix unexpected argument error when passing logx or logy

[joy-kitson]

• Tried adjusting the line plot example to use log-log scale and encountered this error:

Traceback (most recent call last):
  File "/home/jkitson/work/epicast/pssg-plots/examples/simple-line-plot.py", line 15, in <module>
    simple_line.plot(data=df, x="nodes",
  File "/home/jkitson/work/epicast/pssg-plots/examples/../pssgplot/lineplot.py", line 71, in plot
    self.ax.set_xscale('log', basex=logx)
  File "/home/jkitson/.local/lib/python3.10/site-packages/matplotlib/axes/_base.py", line 73, in wrapper
    return get_method(self)(*args, **kwargs)
  File "/home/jkitson/.local/lib/python3.10/site-packages/matplotlib/axis.py", line 837, in _set_axes_scale
    ax._axis_map[name]._set_scale(value, **kwargs)
  File "/home/jkitson/.local/lib/python3.10/site-packages/matplotlib/axis.py", line 796, in _set_scale
    self._scale = mscale.scale_factory(value, self, **kwargs)
  File "/home/jkitson/.local/lib/python3.10/site-packages/matplotlib/scale.py", line 717, in scale_factory
    return scale_cls(axis, **kwargs)
TypeError: LogScale.__init__() got an unexpected keyword argument 'basex'

• Fixed this error by switching from using base{x,y} -> base when calling set_{x,y} scale to fix unexpected argument error

Suspect that this might come down to a versioning issue, but putting this PR here in case someone else ran into the same bug

[Copilot]

Pull Request Overview

This PR fixes an unexpected argument error by replacing the deprecated basex/basey parameters with the updated base parameter for log scales, and it updates the grid line style for better visual consistency.

• Replace basex with base and basey with base in x and y scale settings
• Update grid linestyle from dashed to dotted in both lineplot and barplot

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
pssgplot/barplot.py	Updated x and y scale parameter names and grid linestyle
pssgplot/lineplot.py	Updated x and y scale parameter names and grid linestyle