Bump logback.version from 1.5.6 to 1.5.12 in /qendpoint-backend

Bumps `logback.version` from 1.5.6 to 1.5.12.

Updates `ch.qos.logback:logback-core` from 1.5.6 to 1.5.12
- [Commits](qos-ch/logback@v_1.5.6...v_1.5.12)

Updates `ch.qos.logback:logback-classic` from 1.5.6 to 1.5.12
- [Commits](qos-ch/logback@v_1.5.6...v_1.5.12)

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

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

qendpoint-backend/pom.xml

@@ -45,7 +45,7 @@
         <lwjgl.version>3.3.1</lwjgl.version>
         <rdf4j.version>5.0.2</rdf4j.version>
         <spring.version>3.4.0</spring.version>
-        <logback.version>1.5.6</logback.version>
+        <logback.version>1.5.12</logback.version>
         <jackson.version>2.18.1</jackson.version>
 
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>