Bump webargs from 5.5.3 to 6.0.0

[dependabot-preview]

Bumps webargs from 5.5.3 to 6.0.0.

Changelog

Sourced from webargs's changelog.

6.0.0 (2020-02-27)

Features:

• FalconParser: Pass request content length to req.stream.read to provide compatibility with falcon.testing (477). Thanks suola for the PR.
• Backwards-incompatible: Factorize the use_args / use_kwargs branch in all parsers. When as_kwargs is False, arguments are now consistently appended to the arguments list by the use_args decorator. Before this change, the PyramidParser would prepend the argument list on each call to use_args. Pyramid view functions must reverse the order of their arguments. (478)

6.0.0b8 (2020-02-16)

Refactoring:

• Backwards-incompatible: Use keyword-only arguments (472).

6.0.0b7 (2020-02-14)

Features:

• Backwards-incompatible: webargs will rewrite the error messages in ValidationErrors to be namespaced under the location which raised the error. The messages field on errors will therefore be one layer deeper with a single top-level key.

6.0.0b6 (2020-01-31)

Refactoring:

• Remove the cache attached to webargs parsers. Due to changes between webargs v5 and v6, the cache is no longer considered useful.

Other changes:

• Import Mapping from collections.abc in pyramidparser.py (471). Thanks tirkarthi for the PR.

6.0.0b5 (2020-01-30)

Refactoring:

• Backwards-incompatible: DelimitedList now requires that its input be a string and always serializes as a string. It can still serialize and deserialize using another field, e.g. DelimitedList(Int()) is still valid and requires that the values in the list parse as ints.

6.0.0b4 (2020-01-28)

Bug fixes:

• CVE-2020-7965: Don't attempt to parse JSON if request's content type is mismatched (bugfix from 5.5.3).

6.0.0b3 (2020-01-21)

... (truncated)

Commits

• bfcdf04 Bump version and update changelog
• 3020476 Merge pull request #478 from marshmallow-code/pylint
• 97f2d8e Update CHANGELOG
• 52b265b Remove AsyncParser.use_kwargs useless override
• 81a1e21 Make MultiDictProxy._collect_multiple_keys staticmethod
• ba59660 Factorize _update_args_kwargs logic in Parser
• da9f4fc Fix pylint warnings
• 936a6bb Update CHANGELOG
• 7ccb1ad Merge pull request #477 from suola/falcon-parser-wsgi-ref-read-requires-argument
• 9b86165 Remove unneeded argument.
• Additional commits viewable in compare view

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Superseded by #496.