Bump ch.qos.logback:logback-classic from 1.5.6 to 1.5.18

Bumps [ch.qos.logback:logback-classic](https://github.com/qos-ch/logback) from 1.5.6 to 1.5.18.
- [Release notes](https://github.com/qos-ch/logback/releases)
- [Commits](https://github.com/qos-ch/logback/compare/v_1.5.6...v_1.5.18)

Change-Id: I9d4786c7c45c8af72dea878219fa7443d1a86567

---
updated-dependencies:
- dependency-name: ch.qos.logback:logback-classic
  dependency-version: 1.5.18
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Change-Id: Ifc5378de2b97136548cebcd1871ab24e7ac196f0
diff --git a/pom.xml b/pom.xml
index 0310918..629ad89 100644
--- a/pom.xml
+++ b/pom.xml
@@ -118,7 +118,7 @@
     <dependency>
       <groupId>ch.qos.logback</groupId>
       <artifactId>logback-classic</artifactId>
-      <version>1.5.6</version>
+      <version>1.5.18</version>
       <scope>test</scope>
     </dependency>
     <dependency>