Put LDAP troubleshooter's decrypt in a try/catch to avoid crashing if it cannot decrypt the password

[snipe]

Instead of crashing if the LDAP troubleshooter cannot decrypt the password, this will now return:

✨snipe@chodeblossom✨ snipe-it  (develop) $ php artisan ldap:troubleshoot --ldap-search

 WARNING: This command will display your LDAP password on your terminal. Are you sure this is ok? (yes/no) [no]:
 > yes

Could not decrypt password. This usually means an LDAP password was not set or the APP_KEY was changed since the LDAP pasword was last saved.  Aborting.

Before it would crash with:

WARNING: This command will display your LDAP password on your terminal. Are you sure this is ok? (yes/no) [no]:
 > yes


   Illuminate\Contracts\Encryption\DecryptException

  The payload is invalid.

  at vendor/laravel/framework/src/Illuminate/Encryption/Encrypter.php:236
    232▕      */
    233▕     protected function getJsonPayload($payload)
    234▕     {
    235▕         if (! is_string($payload)) {
  ➜ 236▕             throw new DecryptException('The payload is invalid.');
    237▕         }
    238▕
    239▕         $payload = json_decode(base64_decode($payload), true);
    240▕

      +2 vendor frames

  3   app/Console/Commands/LdapTroubleshooter.php:165
      Illuminate\Support\Facades\Facade::__callStatic("Decrypt")
      +12 vendor frames

  16  artisan:33
      Illuminate\Foundation\Console\Kernel::handle(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))