Update plugin ldap-mail-accounts: use SensitiveString for passwords

[cm-schl]

This updates the plugin ldap-mail-accounts to use the new SensitiveString class introduced with Snappymail v2.30.0

[cm-schl]

@the-djmaze a doubt: the ldap-mail-accounts plugin needs to store a password for authentication against the ldap server.
Now as there exists SensitiveString class is there any need to use this also for password fields inside the plugin configuration?

[the-djmaze]

Now as there exists SensitiveString class is there any need to use this also for password fields inside the plugin configuration?

Currently: no
The SensitiveString class is not for storage, it does:

1. make sure the data in memory is scrambled
2. any (php) error log will show scrambled data

Mainly because of PHP < 8.2 not supporting #[\SensitiveParameter]

In the future this might change in some way

[cm-schl]

Currently: yes

So you mean "currently: no", right? 😊

[the-djmaze]

Right 😉