Update unyt to 2.6.0

[pyup-bot]

This PR updates unyt from 2.4.0 to 2.6.0.

Changelog

2.5.0

------------------

* Importing unyt now registers unyt with Matplotlib's interface for handling
units. See the `Matplotlib
<https://matplotlib.org/gallery/units/units_scatter.html>`_ and `unyt
<https://unyt.readthedocs.io/en/latest/usage.htmlplotting-with-matplotlib>`_
documentation for more details. See `PR 122
<https://github.com/yt-project/unyt/pull/122>`_ and `PR 124
<https://github.com/yt-project/unyt/pull/124>`_. Thank you to Lee Johnston
(l-johnston on GitHub) for the contribution.
* Updated the LaTeX formatting of solar units so they do not get rendered
italicized. See `PR 120
<https://github.com/yt-project/unyt/pull/120>`_. Thank you to Josh Borrow
(JBorrow on GitHub) for the contribution.
* Reduce floating point round-off error when data are converted from integer to
float dtypes. See `PR 119 <https://github.com/yt-project/unyt/pull/119>`_.

2.4.1

------------------

* Add support for the latest releases of h5py, sympy, NumPy, and PyTest. See `PR
115 <https://github.com/yt-project/unyt/pull/115>`_.
* Fix the hash implementation so that identical units cannot have distinct
hashes. See `PR 114 <https://github.com/yt-project/unyt/pull/114>`_ and `PR
117 <https://github.com/yt-project/unyt/pull/114>`_. Thank you to Ben Kimock
(saethlin on GitHub) for the contribution.

Links

• PyPI: https://pypi.org/project/unyt
• Changelog: https://pyup.io/changelogs/unyt/
• Repo: https://github.com/yt-project/unyt

[pyup-bot]

Closing this in favor of #148