update version to 6.12.0

Author: tibbi

app/build.gradle

@@ -15,8 +15,8 @@ android {
         applicationId "com.simplemobiletools.filemanager.pro"
         minSdkVersion 21
         targetSdkVersion 30
-        versionCode 115
-        versionName "6.11.4"
+        versionCode 116
+        versionName "6.12.0"
         multiDexEnabled true
         setProperty("archivesBaseName", "file-manager")
         vectorDrawables.useSupportLibrary = true