set version to 21.2.0 RC1

21.2.0 will replace the release of 21.1.3
because Support for 16kn page sizes has to be tested and it's mandatory for a release via gplay.
Also, android15 support must be shipped before v22 release date.

Signed-off-by: Marcel Hibbe <[email protected]>

Author: mahibi

app/build.gradle

@@ -39,8 +39,8 @@ android {
 
         // mayor.minor.hotfix.increment (for increment: 01-50=Alpha / 51-89=RC / 90-99=stable)
         // xx   .xxx  .xx    .xx
-        versionCode 220000010
-        versionName "22.0.0 Alpha 10"
+        versionCode 210020051
+        versionName "21.2.0 RC1"
 
         flavorDimensions "default"
         renderscriptTargetApi 19