sysutils/ldap-account-manager: Update to 6.8

• Pet portlint while I'm here.

Changelog:

• Parallel editing of multiple entries in different browser tabs supported
• LAM supports the progressive web app standard which allows to install LAM as an icon on home screen.
• Unix: Password management can be disabled in module settings
• LAM Pro:
  • Bind DLZ: entry table can show record data (use special attribute "#records" in server profile)
• Fixed bugs:
  • No drop-down filter box for account status (200)

PR: 238943
Submitted by: basil@vpm.net.ua (maintainer)