Update dependency ch.qos.logback:logback-classic to v1.5.20 (#126)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

gradle/libs.versions.toml

@@ -9,7 +9,7 @@ jaxb-api = "2.3.3"
 jaxb-impl = "2.3.9"
 jetbrains-annotations = "26.0.2-1"
 junit-jupiter = "5.10.0"
-logback = "1.5.19"
+logback = "1.5.20"
 mockito = "5.20.0"
 testcontainers = "1.21.3"