Update python-dateutil to 2.8.2

[pyup-bot]

This PR updates python-dateutil from 2.8.1 to 2.8.2.

Changelog

2.8.2

==========================

Data updates
------------

- Updated tzdata version to 2021a. (gh pr 1128)


Bugfixes
--------

- Fixed a bug in the parser where non-``ValueError`` exceptions would be raised
during exception handling; this would happen, for example, if an
``IllegalMonthError`` was raised in ``dateutil`` code. Fixed by Mark Bailey.
(gh issue 981, pr 987).
- Fixed the custom ``repr`` for ``dateutil.parser.ParserError``, which was not
defined due to an indentation error. (gh issue 991, gh pr 993)
- Fixed a bug that caused ``b'`` prefixes to appear in parse_isodate exception
messages. Reported and fixed by Paul Brown (pawl) (gh pr 1122)
- Make ``isoparse`` raise when trying to parse times with inconsistent use of
`:` separator. Reported and fixed by mariocj89 (gh pr 1125).
- Fixed ``tz.gettz()`` not returning local time when passed an empty string.
Reported by labrys (gh issues 925, 926). Fixed by ffe4 (gh pr 1024)


Documentation changes
---------------------

- Rearranged parser documentation into "Functions", "Classes" and "Warnings and
Exceptions" categories. (gh issue 992, pr 994).
- Updated ``parser.parse`` documentation to reflect the switch from
``ValueError`` to ``ParserError``. (gh issue 992, pr 994).
- Fixed methods in the ``rrule`` module not being displayed in the docs. (gh pr
1025)
- Changed some relative links in the exercise documentation to refer to the
document locations in the input tree, rather than the generated HTML files in
the HTML output tree (which presumably will not exist in non-HTML output
formats). (gh pr 1078).


Misc
----

- Moved ``test_imports.py``, ``test_internals.py`` and ``test_utils.py`` to
pytest.  Reported and fixed by jpurviance (gh pr 978)
- Added project_urls for documentation and source. Patch by andriyor (gh pr
975).
- Simplified handling of bytes and bytearray in ``_parser._timelex``. Reported
and fixed by frenzymadness (gh issue 1060).
- Changed the tests against the upstream tz database to always generate fat
binaries, since until GH-590 and GH-1059 are resolved, "slim" zic binaries
will cause problems in many zones, causing the tests to fail. This also
updates ``zoneinfo.rebuild`` to always generate fat binaries. (gh pr 1076).
- Moved sdist and wheel generation to use `python-build`. Reported and fixed by
mariocj89 (gh pr 1133).

Links

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