Bump org.springframework.boot:spring-boot-starter-data-mongodb

Bumps [org.springframework.boot:spring-boot-starter-data-mongodb](https://github.com/spring-projects/spring-boot) from 2.7.18 to 4.0.0.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.7.18...v4.0.0)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-starter-data-mongodb
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

plugins/maven/example-server/pom.xml

@@ -81,7 +81,7 @@
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-data-mongodb</artifactId>
-            <version>2.7.18</version>
+            <version>4.0.0</version>
         </dependency>
 
         <dependency>