Merge pull request #1005 from mybatis/renovate/logback-monorepo

Update dependency ch.qos.logback:logback-classic to v1.5.21

Author: jeffgbutler

pom.xml

@@ -172,7 +172,7 @@
     <dependency>
       <groupId>ch.qos.logback</groupId>
       <artifactId>logback-classic</artifactId>
-      <version>1.5.20</version>
+      <version>1.5.21</version>
       <scope>test</scope>
     </dependency>
     <dependency>