Bump ch.qos.logback:logback-core from 1.2.13 to 1.3.15

Bumps [ch.qos.logback:logback-core](https://github.com/qos-ch/logback) from 1.2.13 to 1.3.15.
- [Commits](qos-ch/logback@v_1.2.13...v_1.3.15)

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

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

Author: dependabot[bot]

pom.xml

@@ -46,7 +46,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-core</artifactId>
-            <version>1.2.13</version>
+            <version>1.3.15</version>
         </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>