Bump druid.version from 1.2.8 to 1.2.9

Bumps `druid.version` from 1.2.8 to 1.2.9.

Updates `druid` from 1.2.8 to 1.2.9
- [Release notes](https://github.com/alibaba/druid/releases)
- [Commits](https://github.com/alibaba/druid/commits)

Updates `druid-spring-boot-starter` from 1.2.8 to 1.2.9
- [Release notes](https://github.com/alibaba/druid/releases)
- [Commits](https://github.com/alibaba/druid/commits)

---
updated-dependencies:
- dependency-name: com.alibaba:druid
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: com.alibaba:druid-spring-boot-starter
  dependency-type: direct:production
  update-type: version-update:semver-patch
...
Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -63,7 +63,7 @@
         <!-- database related -->
         <mybatis-plus.version>3.5.1</mybatis-plus.version>
         <dynamic-datasource.version>3.5.0</dynamic-datasource.version>
-        <druid.version>1.2.8</druid.version>
+        <druid.version>1.2.9</druid.version>
         <!-- dubbo related -->
         <dubbo.version>3.0.7</dubbo.version>
         <curator.version>4.3.0</curator.version>