chore(deps): bump druid.version from 1.2.20 to 1.2.21

Bumps `druid.version` from 1.2.20 to 1.2.21.

Updates `com.alibaba:druid` from 1.2.20 to 1.2.21
- [Release notes](https://github.com/alibaba/druid/releases)
- [Commits](https://github.com/alibaba/druid/commits)

Updates `com.alibaba:druid-spring-boot-starter` from 1.2.20 to 1.2.21
- [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

@@ -56,7 +56,7 @@
         <commons-beanutils.version>1.9.4</commons-beanutils.version>
         <commons-io.version>2.15.1</commons-io.version>
         <dubbo.version>3.2.10</dubbo.version>
-        <druid.version>1.2.20</druid.version>
+        <druid.version>1.2.21</druid.version>
         <easyexcel.version>3.3.3</easyexcel.version>
         <fastjson.version>2.0.44</fastjson.version>
         <fastjson2.version>2.0.44</fastjson2.version>