Bump apispec from 4.0.0 to 4.2.0

[dependabot-preview]

Bumps apispec from 4.0.0 to 4.2.0.

Changelog

Sourced from apispec's changelog.

4.2.0 (2021-02-06)

Features:

• Make components public attributes of Components class (634).

4.1.0 (2021-01-26)

Features:

• Resolve schemas in callbacks (544). Thanks kortsi for the PR.

Bug fixes:

• Fix docstrings documenting kwargs type as dict (534).
• Use x-minimum and x-maximum extensions to document ranges that are not of number type (e.g. datetime) (614).

Other changes:

• Test against Python 3.9.

Commits

• 9fe61da Bump version and update CHANGELOG
• 6fcee8e Merge pull request #634 from marshmallow-code/components_public_attributes
• 69001cf Make components dicts public attributes of Components class
• 494b0e4 Bump version and update CHANGELOG
• c6b2a1b Merge pull request #616 from marshmallow-code/fix-date-range
• 89b9fd1 field2range: check type using ret
• 8629210 Extract logic for creating minimum and maximum attributes
• 6dd423a Use x- extensions for when the field is not a number
• 954bbbc Change implementation for finding min and max values
• 5762c83 Update CHANGELOG
• Additional commits viewable in compare view

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[codecov]

Codecov Report

Merging #183 (e3e1d81) into master (a16cbcc) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #183   +/-   ##
=======================================
  Coverage   90.54%   90.54%           
=======================================
  Files          40       40           
  Lines        1745     1745           
  Branches      277      277           
=======================================
  Hits         1580     1580           
  Misses        110      110           
  Partials       55       55           

Flag	Coverage Δ
unittests	90.54% <ø> (ø)

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