fix(deps): update dependency ch.qos.logback:logback-classic to v1.5.20

Author: renovate[bot]

spring-boot-starters/pom.xml

@@ -35,7 +35,7 @@
 
     <properties>
         <spring-boot.version>3.3.8</spring-boot.version>
-        <logback.version>1.3.14</logback.version>
+        <logback.version>1.5.20</logback.version>
     </properties>
 
     <!-- Introducing this pom.xml in order to manage Spring Boot dependencies -->