chore(deps): bump dubbo.version from 3.1.7 to 3.1.8

Bumps `dubbo.version` from 3.1.7 to 3.1.8.

Updates `dubbo` from 3.1.7 to 3.1.8
- [Release notes](https://github.com/apache/dubbo/releases)
- [Changelog](https://github.com/apache/dubbo/blob/3.2/CHANGES.md)
- [Commits](https://github.com/apache/dubbo/compare/dubbo-3.1.7...dubbo-3.1.8)

Updates `dubbo-spring-boot-starter` from 3.1.7 to 3.1.8

Updates `dubbo-common` from 3.1.7 to 3.1.8
- [Release notes](https://github.com/apache/dubbo/releases)
- [Changelog](https://github.com/apache/dubbo/blob/3.2/CHANGES.md)
- [Commits](https://github.com/apache/dubbo/compare/dubbo-3.1.7...dubbo-3.1.8)

Updates `dubbo-filter-validation` from 3.1.7 to 3.1.8

Updates `dubbo-config-spring` from 3.1.7 to 3.1.8

Updates `dubbo-remoting-netty4` from 3.1.7 to 3.1.8

Updates `dubbo-remoting-zookeeper-curator5` from 3.1.7 to 3.1.8

Updates `dubbo-rpc-triple` from 3.1.7 to 3.1.8

Updates `dubbo-rpc-dubbo` from 3.1.7 to 3.1.8

Updates `dubbo-registry-zookeeper` from 3.1.7 to 3.1.8

Updates `dubbo-serialization-hessian2` from 3.1.7 to 3.1.8

Updates `dubbo-metadata-report-zookeeper` from 3.1.7 to 3.1.8

---
updated-dependencies:
- dependency-name: org.apache.dubbo:dubbo
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.dubbo:dubbo-spring-boot-starter
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.dubbo:dubbo-common
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.dubbo:dubbo-filter-validation
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.dubbo:dubbo-config-spring
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.dubbo:dubbo-remoting-netty4
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.dubbo:dubbo-remoting-zookeeper-curator5
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.dubbo:dubbo-rpc-triple
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.dubbo:dubbo-rpc-dubbo
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.dubbo:dubbo-registry-zookeeper
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.dubbo:dubbo-serialization-hessian2
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.dubbo:dubbo-metadata-report-zookeeper
  dependency-type: direct:production
  update-type: version-update:semver-patch
...
Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -79,7 +79,7 @@
 
         <!-- dubbo related -->
         <curator.version>5.4.0</curator.version>
-        <dubbo.version>3.1.7</dubbo.version>
+        <dubbo.version>3.1.8</dubbo.version>
         <zookeeper.version>3.8.1</zookeeper.version>
         <!-- apollo -->
         <apollo.version>2.1.0</apollo.version>