Bump ch.qos.logback:logback-classic

Bumps [ch.qos.logback:logback-classic](https://github.com/qos-ch/logback) from 1.5.15 to 1.5.18.
- [Release notes](https://github.com/qos-ch/logback/releases)
- [Commits](qos-ch/logback@v_1.5.15...v_1.5.18)

---
updated-dependencies:
- dependency-name: ch.qos.logback:logback-classic
  dependency-version: 1.5.18
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

examples/fabric-contract-example-maven/pom.xml

@@ -15,7 +15,7 @@
 		<fabric-chaincode-java.version>2.5.6</fabric-chaincode-java.version>
 
 		<!-- Logging -->
-		<logback.version>1.5.15</logback.version>
+		<logback.version>1.5.18</logback.version>
 		<slf4j.version>1.7.5</slf4j.version>
 
 		<!-- Test -->