Bump latest_stable_version to 28.0.3

scripts/appstore.py

@@ -191,7 +191,7 @@ def update():
 	#latest_stable_version = platforms[-1]['version']
 	#if latest_stable_version.endswith('.0.0'):
 	#	latest_stable_version = platforms[-2]['version']
-	latest_stable_version = '27.1.7'
+	latest_stable_version = '28.0.3'
 	r = requests.get(f'https://apps.nextcloud.com/api/v1/platform/{latest_stable_version}/apps.json')
 	apps = r.json()
 	apps.sort(key=lambda app: app['id'])