Revert "SORMAS-Foundation#3418 decreased app database version"

This reverts commit 82faae8.

Author: FredrikSchäferVitagroup

sormas-app/app/src/main/java/de/symeda/sormas/app/backend/common/DatabaseHelper.java

@@ -152,7 +152,7 @@ public class DatabaseHelper extends OrmLiteSqliteOpenHelper {
 	public static final String DATABASE_NAME = "sormas.db";
 	// any time you make changes to your database objects, you may have to increase the database version
 
-	public static final int DATABASE_VERSION = 248;
+	public static final int DATABASE_VERSION = 249;
 
 	private static DatabaseHelper instance = null;