Bump ch.qos.logback:logback-core from 1.3.12 to 1.3.15 in /its/it-tests

Bumps [ch.qos.logback:logback-core](https://github.com/qos-ch/logback) from 1.3.12 to 1.3.15.
- [Commits](qos-ch/logback@v_1.3.12...v_1.3.15)

---
updated-dependencies:
- dependency-name: ch.qos.logback:logback-core
  dependency-type: direct:development
...

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

Author: dependabot[bot]

its/it-tests/pom.xml

@@ -12,7 +12,7 @@
 
   <properties>
     <jetty.version>9.4.55.v20240627</jetty.version>
-    <logback.version>1.3.12</logback.version>
+    <logback.version>1.3.15</logback.version>
     <sonar.skip>true</sonar.skip>
     <skipTests>true</skipTests>
   </properties>