build(deps): bump springdoc-openapi-starter.version from 2.7.0 to 2.8.1

Bumps `springdoc-openapi-starter.version` from 2.7.0 to 2.8.1.

Updates `org.springdoc:springdoc-openapi-starter-common` from 2.7.0 to 2.8.1
- [Release notes](https://github.com/springdoc/springdoc-openapi/releases)
- [Changelog](https://github.com/springdoc/springdoc-openapi/blob/main/CHANGELOG.md)
- [Commits](springdoc/springdoc-openapi@v2.7.0...v2.8.1)

Updates `org.springdoc:springdoc-openapi-starter-webmvc-api` from 2.7.0 to 2.8.1
- [Release notes](https://github.com/springdoc/springdoc-openapi/releases)
- [Changelog](https://github.com/springdoc/springdoc-openapi/blob/main/CHANGELOG.md)
- [Commits](springdoc/springdoc-openapi@v2.7.0...v2.8.1)

Updates `org.springdoc:springdoc-openapi-starter-webflux-api` from 2.7.0 to 2.8.1
- [Release notes](https://github.com/springdoc/springdoc-openapi/releases)
- [Changelog](https://github.com/springdoc/springdoc-openapi/blob/main/CHANGELOG.md)
- [Commits](springdoc/springdoc-openapi@v2.7.0...v2.8.1)

---
updated-dependencies:
- dependency-name: org.springdoc:springdoc-openapi-starter-common
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.springdoc:springdoc-openapi-starter-webmvc-api
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.springdoc:springdoc-openapi-starter-webflux-api
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -78,7 +78,7 @@
     <jackson-module-kotlin.version>2.18.2</jackson-module-kotlin.version>
     <kotlin.version>2.1.0</kotlin.version>
     <cucumber.version>7.20.1</cucumber.version>
-    <springdoc-openapi-starter.version>2.7.0</springdoc-openapi-starter.version>
+    <springdoc-openapi-starter.version>2.8.1</springdoc-openapi-starter.version>
     <meanbean.version>2.0.3</meanbean.version>
     <!-- plugin -->
     <maven-surefire-plugin.version>3.5.2</maven-surefire-plugin.version>