Bump org.jlleitschuh.gradle.ktlint from 12.1.0 to 12.1.1 in /frontend

Bumps org.jlleitschuh.gradle.ktlint from 12.1.0 to 12.1.1.

---
updated-dependencies:
- dependency-name: org.jlleitschuh.gradle.ktlint
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

frontend/app/build.gradle.kts

@@ -1,7 +1,7 @@
 plugins {
     id("com.android.application")
     id("org.jetbrains.kotlin.android")
-    id("org.jlleitschuh.gradle.ktlint") version "12.1.0"
+    id("org.jlleitschuh.gradle.ktlint") version "12.1.1"
     id("kotlin-kapt")
 }