[dependabot]

Bumps marshmallow from 3.26.2 to 4.3.1.

Changelog

Sourced from marshmallow's changelog.

4.3.1 (2026-08-08)

Features:

• If by_value is enabled on an enum with a None value allow_none now defaults to True. Thanks :user:GeraldineGalindo for the suggestion (:issue:2985).

Bug fixes:

• marshmallow.validate.URL accepts a fragment that follows an empty path, e.g. https://example.com#frag (:pr:3016). Thanks :user:hdimer for the PR.

4.3.0 (2026-04-03)

Features:

• Add pre_load and post_load parameters to marshmallow.fields.Field for field-level pre- and post-processing (:issue:2787).
• Typing: improvements to marshmallow.validate (:pr:2940).

4.2.4 (2026-04-02)

Bug fixes:

• marshmallow.validate.URL and marshmallow.validate.Email accept Internationalized Domain Names (IDNs) (:issue:2821, :issue:2936). marshmallow.validate.Email also correctly rejects IDN domains with leading/trailing hyphens. Thanks :user:touhidurrr for the report.
• Typing: Fix typing of nested in marshmallow.fields.Nested (:pr:2935).

4.2.3 (2026-03-25)

Bug fixes:

• Make marshmallow.fields.Number and marshmallow.fields.Mapping abstract base classes to prevent using them within Schemas (:issue:2924). Thanks :user:MartingaleCoda for reporting.
• Allow required to be set on marshmallow.fields.Contant (:issue:2900). Thanks :user:nosnickid for the report and :user:worksbyfriday for the PR.
• Fix marshmallow.validate.OneOf emitting extra pairs when labels outnumber choices (:issue:2869). Thanks: user:T90REAL for the report and :user:rstar327 for the PR.
• Fix behavior when passing a dot-delimited attribute name to partial for a key with data_key set (:pr:2903). Thanks :user:bysiber for the PR.
• Fix Enum field by-name lookup to only return actual members (:pr:2902). Thanks :user:bysiber for the PR.
• marshmallow.fields.DateTime with format="timestamp_ms" properly rejects bool values (:pr:2904). Thanks :user:bysiber for the PR.
• Fix typing of error_messages argument to marshmallow.fields.Field (:pr:1636).

... (truncated)

Commits

• c7b559a Bump version and update changelog
• 902f99c Fix URL validator rejecting a fragment after an empty path (#3016)
• 3207be3 Update code to pass ruff 16
• 1cdbdde pre-commit autoupdate
• fb6a790 Update all dependencies (#3011)
• ba2b449 Lock file maintenance (#3012)
• ec2178c Improve the allow_none default for by_value enums
• 3265c13 [pre-commit.ci] pre-commit autoupdate
• cd3cda8 Update all dependencies (#2990)
• 47d3c7c Lock file maintenance (#2991)
• Additional commits viewable in compare view

[UltiPro]

@dependabot rebase