Please add some escaping in password env, I have password similar "xxxx&zzzz", and "&" broke syncing:
```
2023-10-16 12:50:04,655 Listing local libraries: seaf-cli list
2023-10-16 12:50:05,108 Syncing library btsync: seaf-cli sync -l 3XX2-XXX-2eXXea -s https://xxxxxxxx.xx -d /dsc/seafile/btsync -u xxx@xx.xx -p ********
-bash: line 1: zzzz: command not found
Traceback (most recent call last):
File "/usr/bin/seaf-cli", line 1023, in <module>
main()
File "/usr/bin/seaf-cli", line 1019, in main
args.func(args)
File "/usr/bin/seaf-cli", line 675, in seaf_sync
token = get_token(url, username, password, tfa, conf_dir)
```
