Update babel to 2.15.0

[pyup-bot]

This PR updates babel from 2.13.1 to 2.15.0.

Changelog

2.15.0

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

Python version support
~~~~~~~~~~~~~~~~~~~~~~

* Babel 2.15.0 will require Python 3.8 or newer. (:gh:`1048`)

Features
~~~~~~~~

* CLDR: Upgrade to CLDR 44 (:gh:`1071`) (akx)
* Dates: Support for the "fall back to short format" logic for time delta formatting (:gh:`1075`) (akx)
* Message: More versatile .po IO functions (:gh:`1068`) (akx)
* Numbers: Improved support for alternate spaces when parsing numbers (:gh:`1007`) (ronnix's first contribution)

Infrastructure
~~~~~~~~~~~~~~

* Upgrade GitHub Actions (:gh:`1054`) (cclauss's first contribution)
* The Unicode license is now included in `locale-data` and in the documentation (:gh:`1074`) (akx)

2.14.0

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

Upcoming deprecation
~~~~~~~~~~~~~~~~~~~~

* This version, Babel 2.14, is the last version of Babel to support Python 3.7.
Babel 2.15 will require Python 3.8 or newer.
* We had previously announced Babel 2.13 to have been the last version to support
Python 3.7, but being able to use CLDR 43 with Python 3.7 was deemed important
enough to keep supporting the EOL Python version for one more release.

Possibly backwards incompatible changes
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

* ``Locale.number_symbols`` will now have first-level keys for each numbering system.
Since the implicit default numbering system still is ``"latn"``, what had previously
been e.g. ``Locale.number_symbols['decimal']`` is now ``Locale.number_symbols['latn']['decimal']``.
* Babel no longer directly depends on either ``distutils`` or ``setuptools``; if you had been
using the Babel setuptools command extensions, you would need to explicitly depend on ``setuptools`` –
though given you're running ``setup.py`` you probably already do.

Features
~~~~~~~~

* CLDR/Numbers: Add support of local numbering systems for number symbols by kajte in :gh:`1036`
* CLDR: Upgrade to CLDR 43 by rix0rrr in :gh:`1043`
* Frontend: Allow last_translator to be passed as an option to extract_message by AivGitHub in :gh:`1044`
* Frontend: Decouple `pybabel` CLI frontend from distutils/setuptools by akx in :gh:`1041`
* Numbers: Improve parsing of malformed decimals by Olunusib and akx in :gh:`1042`

Infrastructure
~~~~~~~~~~~~~~

* Enforce trailing commas (enable Ruff COM rule and autofix) by akx in :gh:`1045`
* CI: use GitHub output formats by akx in :gh:`1046`

Links

• PyPI: https://pypi.org/project/babel
• Changelog: https://data.safetycli.com/changelogs/babel/
• Homepage: https://babel.pocoo.org/
• Docs: https://pythonhosted.org/Babel/