Bump dubbo.version from 3.0.5 to 3.0.6

Bumps `dubbo.version` from 3.0.5 to 3.0.6.

Updates `dubbo-common` from 3.0.5 to 3.0.6
- [Release notes](https://github.com/apache/dubbo/releases)
- [Changelog](https://github.com/apache/dubbo/blob/3.0/CHANGES.md)
- [Commits](https://github.com/apache/dubbo/compare/dubbo-3.0.5...dubbo-3.0.6)

Updates `dubbo-filter-validation` from 3.0.5 to 3.0.6

Updates `dubbo-config-spring` from 3.0.5 to 3.0.6

Updates `dubbo-remoting-netty4` from 3.0.5 to 3.0.6

Updates `dubbo-rpc-dubbo` from 3.0.5 to 3.0.6

Updates `dubbo-registry-zookeeper` from 3.0.5 to 3.0.6

Updates `dubbo-serialization-hessian2` from 3.0.5 to 3.0.6

Updates `dubbo-metadata-report-zookeeper` from 3.0.5 to 3.0.6

---
updated-dependencies:
- 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-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

@@ -65,7 +65,7 @@
         <dynamic-datasource.version>3.5.0</dynamic-datasource.version>
         <druid.version>1.2.8</druid.version>
         <!-- dubbo related -->
-        <dubbo.version>3.0.5</dubbo.version>
+        <dubbo.version>3.0.6</dubbo.version>
         <curator.version>4.3.0</curator.version>
         <zookeeper.version>3.4.14</zookeeper.version>
         <!-- apollo -->