Upgrade Swagger 2.2.14 -> 2.2.15

[Picnic-Bot]

This PR contains the following updates:

Package	Type	Update	Change
Swagger	compile	patch	2.2.14 -> 2.2.15

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Release Notes

swagger-api/swagger-core

v2.2.15: Swagger-core 2.2.15 released!

Compare Source

• fix oas 3.1 parameter resolving (#​4449)
• fix siblings in response and request body schemas OAS 3.1 resolving (#​4445)

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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 2.2.14 -> 2.2.15 (#717)

See:
- https://github.com/swagger-api/swagger-core/releases/tag/v2.2.15
- https://github.com/swagger-api/swagger-core/compare/v2.2.14...v2.2.15

[github-actions]

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[sonarqubecloud]

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[rickie]

That was an interesting tweak @Stephan202 😉.