Update logback monorepo to v1.5.20 (#683)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: renovate[bot]

build.gradle

@@ -45,7 +45,7 @@ def versions = [
   junitPitest         : '1.2.1',
   jackson             : '2.19.2',
   log4j               : '2.25.2',
-  logback             : '1.5.18',
+  logback             : '1.5.20',
   bouncycastle        : '1.82',
   restAssured         : '5.5.0',
   serenity            : '4.2.30'