Bump the spring group with 3 updates

Bumps the spring group with 3 updates: [org.springframework.boot:spring-boot-starter-parent](https://github.com/spring-projects/spring-boot), [org.springdoc:springdoc-openapi-starter-common](https://github.com/springdoc/springdoc-openapi) and [org.springdoc:springdoc-openapi-starter-webmvc-ui](https://github.com/springdoc/springdoc-openapi).


Updates `org.springframework.boot:spring-boot-starter-parent` from 3.5.7 to 4.0.0
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.5.7...v4.0.0)

Updates `org.springdoc:springdoc-openapi-starter-common` from 2.8.14 to 3.0.0
- [Release notes](https://github.com/springdoc/springdoc-openapi/releases)
- [Changelog](https://github.com/springdoc/springdoc-openapi/blob/main/CHANGELOG.md)
- [Commits](springdoc/springdoc-openapi@v2.8.14...v3.0.0)

Updates `org.springdoc:springdoc-openapi-starter-webmvc-ui` from 2.8.14 to 3.0.0
- [Release notes](https://github.com/springdoc/springdoc-openapi/releases)
- [Changelog](https://github.com/springdoc/springdoc-openapi/blob/main/CHANGELOG.md)
- [Commits](springdoc/springdoc-openapi@v2.8.14...v3.0.0)

Updates `org.springdoc:springdoc-openapi-starter-webmvc-ui` from 2.8.14 to 3.0.0
- [Release notes](https://github.com/springdoc/springdoc-openapi/releases)
- [Changelog](https://github.com/springdoc/springdoc-openapi/blob/main/CHANGELOG.md)
- [Commits](springdoc/springdoc-openapi@v2.8.14...v3.0.0)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-starter-parent
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: spring
- dependency-name: org.springdoc:springdoc-openapi-starter-common
  dependency-version: 3.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: spring
- dependency-name: org.springdoc:springdoc-openapi-starter-webmvc-ui
  dependency-version: 3.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: spring
- dependency-name: org.springdoc:springdoc-openapi-starter-webmvc-ui
  dependency-version: 3.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: spring
...

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

Author: dependabot[bot]

pom.xml

@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.5.7</version>
+        <version>4.0.0</version>
         <relativePath/>
     </parent>
     <artifactId>dokgen</artifactId>
@@ -21,7 +21,7 @@
         <kotlin.version>2.2.21</kotlin.version>
         <openhtml.version>1.1.31</openhtml.version>
         <commonmark.version>0.27.0</commonmark.version>
-        <springdoc.version>2.8.14</springdoc.version>
+        <springdoc.version>3.0.0</springdoc.version>
     </properties>
     <dependencies>
         <dependency>