release: switch 2.19 to beta version series, beta play store track

Author: mikehardy

AnkiDroid/build.gradle

@@ -86,8 +86,8 @@ android {
         //
         // This ensures the correct ordering between the various types of releases (dev < alpha < beta < release) which is
         // needed for upgrades to be offered correctly.
-        versionCode=21900112
-        versionName="2.19alpha12"
+        versionCode=21900200
+        versionName="2.19beta0"
         minSdk libs.versions.minSdk.get().toInteger()
 
         // Stays until this is in a release: https://github.com/google/desugar_jdk_libs/commit/c01a5446ca13586b801dbba4d83c6821337b3cc2
@@ -265,7 +265,7 @@ android {
 
 play {
     serviceAccountCredentials.set(file("${homePath}/src/AnkiDroid-GCP-Publish-Credentials.json"))
-    track.set('alpha')
+    track.set('beta')
 }
 
 // Install Git pre-commit hook for Ktlint