chore(deps): bump spring-boot.version from 2.7.6 to 2.7.18

Bumps `spring-boot.version` from 2.7.6 to 2.7.18.

Updates `org.springframework.boot:spring-boot-dependencies` from 2.7.6 to 2.7.18
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.7.6...v2.7.18)

Updates `org.springframework.boot:spring-boot-maven-plugin` from 2.7.6 to 2.7.18
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.7.6...v2.7.18)

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

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

pom.xml

@@ -74,7 +74,7 @@
         <maven.compiler.source>8</maven.compiler.source>
         <maven.compiler.target>8</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <spring-boot.version>2.7.6</spring-boot.version>
+        <spring-boot.version>2.7.18</spring-boot.version>
         <mybatis-spring-boot.version>2.3.2</mybatis-spring-boot.version>
         <nacos.version>2.1.2</nacos.version>
         <rocketmq.version>4.9.8</rocketmq.version>