Upgrade Swagger 2.2.11 -> 2.2.12

[Picnic-Bot]

This PR contains the following updates:

Package	Type	Update	Change
Swagger	compile	patch	2.2.11 -> 2.2.12

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Release Notes

swagger-api/swagger-core

v2.2.12: Swagger-core 2.2.12 released!

Compare Source

• OAS 3.1 - fix webhooks class scanning (#​4426)
• OAS 3.1 - annotations and resolve logic (#​4425)
• Change ModelResolver to better handle JsonIgnoreProperties (#​4418)
• fix #​3581: recognize Hidden annotation on enum values. (#​4394)

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• If you want to rebase/retry this PR, check this box

[Picnic-Bot]

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Suggested commit message:

Upgrade Swagger 2.2.11 -> 2.2.12 (#684)

See:
- https://github.com/swagger-api/swagger-core/releases/tag/v2.2.12
- https://github.com/swagger-api/swagger-core/compare/v2.2.11...v2.2.12

[sonarqubecloud]

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