Bump to v0.50.1

Bumping to re-release 0.50.0 with semantic versioned github release tag since APK attachment to release failed

Author: agnostic-apollo

app/build.gradle

@@ -9,8 +9,8 @@ android {
         applicationId "com.termux.api"
         minSdkVersion project.properties.minSdkVersion.toInteger()
         targetSdkVersion project.properties.targetSdkVersion.toInteger()
-        versionCode 50
-        versionName "0.50.0"
+        versionCode 51
+        versionName "0.50.1"
 
         if (appVersionName) versionName = appVersionName
         validateVersionName(versionName)