build(deps): bump spring-boot.version from 4.0.0 to 4.0.6 in /services

Bumps `spring-boot.version` from 4.0.0 to 4.0.6.

Updates `org.springframework.boot:spring-boot-dependencies` from 4.0.0 to 4.0.6
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](https://github.com/spring-projects/spring-boot/compare/v4.0.0...v4.0.6)

Updates `org.springframework.boot:spring-boot-maven-plugin` from 4.0.0 to 4.0.6
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](https://github.com/spring-projects/spring-boot/compare/v4.0.0...v4.0.6)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-dependencies
  dependency-version: 4.0.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.springframework.boot:spring-boot-maven-plugin
  dependency-version: 4.0.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

services/pom.xml

@@ -18,7 +18,7 @@
 
     <properties>
         <java.version>17</java.version>
-        <spring-boot.version>4.0.0</spring-boot.version>
+        <spring-boot.version>4.0.6</spring-boot.version>
         <!-- 平台数据访问：PostgreSQL 15 + MyBatis-Plus（Spring Boot 4 用 boot4-starter） -->
         <mybatis-plus.version>3.5.15</mybatis-plus.version>
     </properties>