Bump ch.qos.logback:logback-classic from 1.2.9 to 1.5.6

Bumps [ch.qos.logback:logback-classic](https://github.com/qos-ch/logback) from 1.2.9 to 1.5.6.
- [Commits](qos-ch/logback@v_1.2.9...v_1.5.6)

---
updated-dependencies:
- dependency-name: ch.qos.logback:logback-classic
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -79,7 +79,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>1.2.9</version>
+            <version>1.5.6</version>
             <scope>test</scope>
         </dependency>
         <dependency>