build(deps): bump ch.qos.logback:logback-core in /backend

Bumps [ch.qos.logback:logback-core](https://github.com/qos-ch/logback) from 1.5.22 to 1.5.25.
- [Release notes](https://github.com/qos-ch/logback/releases)
- [Commits](qos-ch/logback@v_1.5.22...v_1.5.25)

---
updated-dependencies:
- dependency-name: ch.qos.logback:logback-core
  dependency-version: 1.5.25
  dependency-type: direct:production
...

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

Author: dependabot[bot]

backend/pom.xml

@@ -51,7 +51,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-core</artifactId>
-            <version>1.5.22</version>
+            <version>1.5.25</version>
         </dependency>
 
         <dependency>