Bump the all-dependencies group across 1 directory with 3 updates

Bumps the all-dependencies group with 3 updates in the / directory: [org.springdoc:springdoc-openapi-starter-webmvc-ui](https://github.com/springdoc/springdoc-openapi), [io.mockk:mockk](https://github.com/mockk/mockk) and [org.springframework.boot](https://github.com/spring-projects/spring-boot).


Updates `org.springdoc:springdoc-openapi-starter-webmvc-ui` from 2.8.1 to 2.8.3
- [Release notes](https://github.com/springdoc/springdoc-openapi/releases)
- [Changelog](https://github.com/springdoc/springdoc-openapi/blob/main/CHANGELOG.md)
- [Commits](springdoc/springdoc-openapi@v2.8.1...v2.8.3)

Updates `io.mockk:mockk` from 1.13.14 to 1.13.16
- [Release notes](https://github.com/mockk/mockk/releases)
- [Commits](mockk/mockk@1.13.14...1.13.16)

Updates `org.springframework.boot` from 3.4.1 to 3.4.2
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.4.1...v3.4.2)

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

@@ -1,9 +1,9 @@
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
-val mockkVersion = "1.13.14"
+val mockkVersion = "1.13.16"
 val logstashVersion = "8.0"
 val testContainersVersion = "1.20.4"
-val springDocVersion = "2.8.1"
+val springDocVersion = "2.8.3"
 val tokenValidationVersion = "5.0.14"
 val kotlinVersion = "2.1.0"
 
@@ -13,7 +13,7 @@ repositories {
 
 plugins {
     val kotlinVersion = "2.0.0"
-    id("org.springframework.boot") version "3.4.1"
+    id("org.springframework.boot") version "3.4.2"
     kotlin("jvm") version kotlinVersion
     kotlin("plugin.spring") version kotlinVersion
     kotlin("plugin.jpa") version kotlinVersion