Update anki to 2.1.13
- Fix some issues that cause the main window to get stuck.
- Fix an empty deck list sometimes appearing when restoring from a backup.
- Fix Anki hanging after an error occurs during startup.
- Fix error message when syncing with an unconfirmed email address.
- Use jsonschema for add-on manifests
- Warn in DB check when high due numbers are encountered.
- Improve error messages on full disk and failed add-on deletion.
- Fix relearning cards being given learning step count in V2 scheduler.
- Fix preview window failing to appear when show both sides enabled.
- Removing trailing BR tag when pasting into an empty field.
- Double click on add-ons to edit their configuration
- Fix the window icon in a few screens
- Improve the default type in the answer note type.