Bump ch.qos.logback:logback-classic from 1.5.3 to 1.5.6

Bumps [ch.qos.logback:logback-classic](https://github.com/qos-ch/logback) from 1.5.3 to 1.5.6.
- [Commits](qos-ch/logback@v_1.5.3...v_1.5.6)

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

Signed-off-by: dependabot[bot] <support@github.com>

gradle/libs.versions.toml

@@ -10,7 +10,7 @@ blossom = "2.1.0"
 # Libraries
 kord-extensions = "1.8.0-20240319.115836-21"
 logging = "6.0.4"
-logback = "1.5.3"
+logback = "1.5.6"
 github-api = "1.321"
 kmongo = "4.11.0"
 docgenerator = "0.1.5-SNAPSHOT"