chore(deps): bump spring-boot.version from 2.7.5 to 3.0.6

Bumps `spring-boot.version` from 2.7.5 to 3.0.6.

Updates `spring-boot-dependencies` from 2.7.5 to 3.0.6
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.7.5...v3.0.6)

Updates `spring-boot-maven-plugin` from 2.7.5 to 3.0.6
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.7.5...v3.0.6)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-dependencies
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: org.springframework.boot:spring-boot-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

examples/pom.xml

@@ -13,7 +13,7 @@
   <packaging>pom</packaging>
 
   <properties>
-    <spring-boot.version>2.7.5</spring-boot.version>
+    <spring-boot.version>3.0.6</spring-boot.version>
     <camunda-process-test-coverage.version>2.0.0</camunda-process-test-coverage.version>
     <camunda-platform-7-mockito.version>6.18.0</camunda-platform-7-mockito.version>
   </properties>