Bump logback.version from 1.5.5 to 1.5.6

Bumps `logback.version` from 1.5.5 to 1.5.6.

Updates `ch.qos.logback:logback-core` from 1.5.5 to 1.5.6
- [Commits](qos-ch/logback@v_1.5.5...v_1.5.6)

Updates `ch.qos.logback:logback-classic` from 1.5.5 to 1.5.6
- [Commits](qos-ch/logback@v_1.5.5...v_1.5.6)

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

Signed-off-by: dependabot[bot] <[email protected]>

pom.xml

@@ -18,7 +18,7 @@
 
         <!-- testing -->
         <maven-failsafe-plugin.version>3.2.5</maven-failsafe-plugin.version>
-        <logback.version>1.5.5</logback.version>
+        <logback.version>1.5.6</logback.version>
         <junit.version>5.10.2</junit.version>
     </properties>