This MR contains the following updates:

Package	Update	Change
python-dateutil	patch	`==2.8.1` -> `==2.8.2`

dateutil/dateutil

Version 2.8.2 (2021-07-08)

Data updates

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)

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).

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).

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