Bump apispec from 6.6.1 to 6.7.0

[dependabot[bot]]

Bumps apispec from 6.6.1 to 6.7.0.

Changelog

Sourced from apispec's changelog.

6.7.0 (2024-10-20)

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Bug fixes:

• Fix handling of fields.Dict() with values unset (:issue:949). Thanks :user:luhn for the catch and patch.

Other changes:

• Officially support Python 3.13 (:pr:948).
• Drop support for Python 3.8 (:pr:947).

Commits

• 0b2ff45 Bump version and update changelog
• 231ec4d Update RELEASING.md
• a05b37b Add additionalProperties: {} for Dict with the default values (#950)
• b1bcefb Update CHANGELOG
• 9228187 Merge pull request #948 from marshmallow-code/py13
• 25b5994 Support Python 3.13
• ed90795 Merge pull request #947 from marshmallow-code/py38
• 84421ac Drop Python 3.8
• bc3551f Bump sphinx from 8.1.0 to 8.1.3 (#945)
• cd00e32 Bump sphinx-issues from 4.1.0 to 5.0.0 (#946)
• Additional commits viewable in compare view

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