Update dependency org.springdoc:springdoc-openapi-starter-webmvc-ui to v2.8.3

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.springdoc:springdoc-openapi-starter-webmvc-ui (source)	2.8.1 -> 2.8.3

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Release Notes

springdoc/springdoc-openapi (org.springdoc:springdoc-openapi-starter-webmvc-ui)

v2.8.3

Added

• #​2851 - Refine condition, for ignoring types when using PolymorphicModelConverter

v2.8.2

Added

• #​2849 - Provide better compatibility for projects migrating from OAS 3.0 to OAS 3.1

Fixed

• #​2846 - ClassCastException with spring-data-rest and openapi version 3.1 bug
• #​2844 - PageableObject and SortObject are called Pageablenull and Sortnull

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