Bump apispec from 4.7.1 to 5.1.0

[dependabot]

Bumps apispec from 4.7.1 to 5.1.0.

Changelog

Sourced from apispec's changelog.

5.1.0 (2021-08-10)

---

Features:

• Add lazy option to component registration methods. This allows to add components to the spec only if they are actually referenced. (:pr:702)
• Add BasePlugin.header_helper and MarshmallowPlugin.header_helper (:pr:703).

Bug fixes:

• Ensure plugin helpers get component copies. Avoids issues if a plugin helper mutates its inputs. (:pr:704)

5.0.0 (2021-07-29)

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Features:

• Rename doc_default to default. Since schema metadata is namespaced in a single metadata parameter, there is no name collision with default parameter anymore (:issue:687).
• Don't build schema component reference in OpenAPIConverter.resolve_nested_schema. This is done later in Components (:pr:700).
• MarshmallowPlugin: resolve schemas in allOf, oneOf, anyOf and not (:pr:701). Thanks :user:stefanv for the initial work on this.

Other changes:

• Refactor Components methods to make them consistent. Use component_id rather than name, remove **kwargs when unused. (:pr:696)

5.0.0b1 (2021-07-22)

---

Features:

• Resolve all component references in paths and components. All references must be passed as strings, not as a {$ref: '...'}} dict (:pr:671).

Other changes:

• Don't use deprecated missing marshmallow field attribute but use load_default instead (:pr:692).
• Refactor references resolution. get_ref method is moved from APISpec to Components (:pr:655). APISpec.clean_parameters and APISpec.clean_parameters are now private methods (:pr:695).
• Drop support for marshmallow < 3.13.0 (:pr:692).

Commits

• 9c6f120 Bump version and update CHANGELOG
• 45b2dfc Merge pull request #704 from marshmallow-code/plugin_helpers_get_copies
• 41bdfa0 Ensure plugin helpers get component copies
• 5932e61 Merge pull request #703 from marshmallow-code/header_helper
• 521bee2 Add MarshmallowPlugin.header_helper
• a4065c0 Improve MarshmallowPlugin.parameter_helper tests
• 8af46c4 Add BasePlugin.header_helper
• d5cd8ab Merge pull request #702 from marshmallow-code/lazy_components
• 0d659b2 Update docs about components lazy registration
• 129abc2 Lazy component registration
• Additional commits viewable in compare view

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[dependabot]

Superseded by #287.