Bump up the current metadata database version.

Change-Id: Id2814a2224b90ba124f1c9801760a2c86f2dc2e2

java/src/com/android/inputmethod/dictionarypack/MetadataDbHelper.java

@@ -48,7 +48,7 @@ public class MetadataDbHelper extends SQLiteOpenHelper {
     private static final int METADATA_DATABASE_VERSION_WITH_CLIENTID = 6;
     // The current database version.
     // This MUST be increased every time the dictionary pack metadata URL changes.
-    private static final int CURRENT_METADATA_DATABASE_VERSION = 12;
+    private static final int CURRENT_METADATA_DATABASE_VERSION = 13;
 
     private final static long NOT_A_DOWNLOAD_ID = -1;