Log Message:
py-astropy: updated to 6.1.2

Version 6.1.2 (2024-07-23)

Bug Fixes

astropy.io.ascii

- When reading CDS and MRT files, only interpret a line as a section delimiter if
  it contains exclusively dashes or equal signs. This enables rows starting with \ 
dashes.

astropy.io.fits

- Fix a spurious exception when reading integer compressed images with blanks.

- Fixed a crash that occurred for files opened via
  ``fits.open(..., mode='update')``, on Windows, and with numpy 2.0 installed.
  A warning is now emitted in cases most likely to escalate into
  undefined behavior (e.g., segfaults), i.e., when a closed memory map object is
  still referenced by external code. Please report any regression found.

astropy.modeling

- Fixed a bug that caused models returned by non-linear fitters to have
  ``sync_constraints`` set to `False`, which caused constraints accessed \ 
through, e.g.,
  ``Model.fixed`` to not be in sync with the ``fixed`` attribute of the parameters.

- Fixed a bug that caused ``CompoundModel.without_units_for_data`` to return an
  incorrectly constructed model when the compound model contained a * or /
  operation, and which also caused fitting to not work correctly with compound
  models that contained * or / operations.

astropy.units

- The OGIP parser is now less restrictive with strings that represent a unit that
  includes the ``sqrt`` function.
  For example, ``u.Unit("sqrt(m)**3", format="ogip")`` no \ 
longer causes a
  ``ValueError``.

astropy.utils

- Fixed an edge-case bug in ``overlap_slices`` where the function could
  return an empty slice for non-overlapping slices.

astropy.visualization

- Fixed a WCSAxes bug when overlaying a frame with default units that are not \ 
degrees.