Bump ch.qos.logback:logback-classic from 1.5.18 to 1.5.20 (#226)

Co-authored-by: Boni Garcia <boni.garcia@uc3m.es>

Author: dependabot[bot]

pom.xml

@@ -7,7 +7,7 @@
 
  <properties>
  <slf4j.version>2.0.17</slf4j.version>
- <logback.version>1.5.18</logback.version>
+ <logback.version>1.5.20</logback.version>
 
  <junit.version>6.0.0</junit.version>
  <assertj.version>3.27.6</assertj.version>