build(deps): bump ch.qos.logback:logback-classic from 1.5.1 to 1.5.6

Bumps [ch.qos.logback:logback-classic](https://github.com/qos-ch/logback) from 1.5.1 to 1.5.6.
- [Commits](qos-ch/logback@v_1.5.1...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] <[email protected]>

app/build.gradle.kts

@@ -39,7 +39,7 @@ dependencies {
     implementation("io.ktor:ktor-client-core:2.3.8")
     implementation("io.ktor:ktor-client-cio:2.3.8")
     implementation("io.ktor:ktor-server-html-builder:2.3.8")
-    implementation("ch.qos.logback:logback-classic:1.5.1")
+    implementation("ch.qos.logback:logback-classic:1.5.6")
 
     // Use the Kotlin test library.
     testImplementation("org.jetbrains.kotlin:kotlin-test")