Bump logback-core from 1.1.8 to 1.2.9

Bumps logback-core from 1.1.8 to 1.2.9.

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

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

pom.xml

@@ -99,7 +99,7 @@
         <json-path.version>2.2.0</json-path.version>
 
         <slf4j.version>1.7.5</slf4j.version>
-        <logback.version>1.1.8</logback.version>
+        <logback.version>1.2.9</logback.version>