Bump org.springdoc:springdoc-openapi-starter-webmvc-ui

Bumps the all-dependencies group with 1 update: [org.springdoc:springdoc-openapi-starter-webmvc-ui](https://github.com/springdoc/springdoc-openapi).


Updates `org.springdoc:springdoc-openapi-starter-webmvc-ui` from 2.8.8 to 2.8.9
- [Release notes](https://github.com/springdoc/springdoc-openapi/releases)
- [Changelog](https://github.com/springdoc/springdoc-openapi/blob/main/CHANGELOG.md)
- [Commits](springdoc/springdoc-openapi@v2.8.8...v2.8.9)

---
updated-dependencies:
- dependency-name: org.springdoc:springdoc-openapi-starter-webmvc-ui
  dependency-version: 2.8.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

build.gradle.kts

@@ -3,7 +3,7 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 val mockkVersion = "1.14.2"
 val logstashVersion = "8.1"
 val testContainersVersion = "1.21.1"
-val springDocVersion = "2.8.8"
+val springDocVersion = "2.8.9"
 val tokenValidationVersion = "5.0.29"
 val kotlinVersion = "2.1.21"