build(deps): bump druid from 1.2.8 to 1.2.15

Bumps [druid](https://github.com/alibaba/druid) from 1.2.8 to 1.2.15.
- [Release notes](https://github.com/alibaba/druid/releases)
- [Commits](https://github.com/alibaba/druid/compare/1.2.8...1.2.15)

---
updated-dependencies:
- dependency-name: com.alibaba:druid
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -40,7 +40,7 @@
         <dependency>
             <groupId>com.alibaba</groupId>
             <artifactId>druid</artifactId>
-            <version>1.2.6</version>
+            <version>1.2.15</version>
         </dependency>
 
         <!--  lombok  -->