Bump release version to 0.5.0 (#57)

Author: ricky9667

app/build.gradle.kts

@@ -25,8 +25,8 @@ android {
         applicationId = "com.rickyhu.hushkeyboard"
         minSdk = 29
         targetSdk = 36
-        versionCode = 3
-        versionName = "0.4.0"
+        versionCode = 4
+        versionName = "0.5.0"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {