REL: v3.5.2

This is the second bugfix release of the 3.5.x series.

This release contains several bug-fixes and adjustments:

* Add support for Windows on ARM (source-only; no wheels provided yet)
* Add year to concise date formatter when displaying less than 12 months
* Disable QuadMesh mouse cursor to avoid severe performance regression
  in pcolormesh
* Delay backend selection to allow choosing one in more cases
* Fix automatic layout bugs in EPS output
* Fix autoscaling of scatter plots
* Fix clearing of subfigures
* Fix colorbar exponents, inversion of extensions, and use on inset axes
* Fix compatibility with various NumPy-like classes (e.g., Pandas,
  xarray, etc.)
* Fix constrained layout bugs with mixed subgrids
* Fix errorbar with dashes
* Fix errors in conversion to GTK4 and Qt6
* Fix figure options accidentally re-ordering data
* Fix keyboard focus of TkAgg backend
* Fix manual selection of contour labels
* Fix path effects on text with whitespace
* Fix quiver in subfigures
* Fix RangeSlider.set_val displaying incorrectly
* Fix regressions in collection data limits
* Fix stairs with no edgecolor
* Fix some leaks in Tk backends
* Fix tight layout DPI confusion
* Fix tool button customizability and some tool manager bugs
* Only set Tk HiDPI scaling-on-map for Windows systems
* Partially allow TTC font collection files by selecting the first font