Added a cersion bump of the DB schema to prevent failed downgrades.

Duplicati.Library.RestAPI/Database/Database schema/8. Encrypted fields.sql

@@ -0,0 +1,6 @@
+/*
+This update does nothing but the user cannot really downgrade,
+because the fields that are encrypted cannot be read by the previous version.
+*/
+SELECT COUNT(*) FROM "Notification";
+

Duplicati.Library.RestAPI/Database/Database schema/Schema.sql

@@ -164,5 +164,5 @@ CREATE TABLE "TokenFamily" (
     "LastUpdated" INTEGER NOT NULL
 );
 
-INSERT INTO "Version" ("Version") VALUES (7);
+INSERT INTO "Version" ("Version") VALUES (8);