Bump webargs from 8.3.0 to 8.4.0

[dependabot]

Bumps webargs from 8.3.0 to 8.4.0.

Changelog

Sourced from webargs's changelog.

8.4.0 (2024-01-07)

---

Features:

• Add a new class attribute, empty_value to DelimitedList and DelimitedTuple, with a default of "". This controls the value deserialized when an empty string is seen.

empty_value can be used to handle types other than strings more gracefully, e.g.

.. code-block:: python

from webargs import fields
class IntList(fields.DelimitedList):
empty_value = 0
myfield = IntList(fields.Int())

.. note::

``empty_value`` will be changing in webargs v9.0 to be ``missing`` by
default. This will allow use of fields with ``load_default`` to specify
handling of the empty value.

• The rule for default argument names has been made configurable by overriding the get_default_arg_name method. This is described in the argument passing documentation.

Other changes:

• Drop support for Python 3.7, which is EOL.
• Type annotations for FlaskParser have been improved.

Commits

• 920eb94 Bump version, update changelog, and update LICENSE
• d80faff Fix name of GHA workflow
• 32a4cd4 Fix typing of handle_error
• 83ad0a8 Docs updates re: dropping 3.7
• 3a954d3 Update .pre-commit-config.yaml
• 9923f3a Update GHA and tox config for consistency with other marshmallow repos
• e9316db Bump flake8 from 6.1.0 to 7.0.0
• 3ad15a0 Merge pull request #905 from marshmallow-code/dependabot/github_actions/actio...
• 2480108 Bump actions/setup-python from 4 to 5
• ea1d9d6 [pre-commit.ci] pre-commit autoupdate (#898)
• Additional commits viewable in compare view

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