chore: 버전 업데이트 v1.4.3 (1143)

- versionCode: 1142 → 1143
- versionName: 1.4.2 → 1.4.3

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

app/build.gradle.kts

@@ -20,8 +20,8 @@ android {
  applicationId = "com.example.shiftalarm"
  minSdk = 26
  targetSdk = 35
- versionCode = 1142
- versionName = "1.4.2"
+ versionCode = 1143
+ versionName = "1.4.3"
 
  testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
  }