更新PostgreSQL数据库

Create a backup
Stop all TeslaMate containers
```
docker-compose down
```
Delete the database volume. Be careful, this will delete all your previously recorded data! Make sure that your backup can be restored before you start.
```
docker volume rm "$(basename "$PWD")_teslamate-db"
```
Change the postgres version in docker-compose.yml and start the container
```
database:
  image: postgres:xx
```
```
docker-compose up -d database
```
Restore the backup