Response time problem under load for verdaccio-ldap version >= 4.0.0

[GoaMind]

Looks like verdaccio-ldap having some problems with response time under load

Problem reproducible with verdaccio-ldap version >= 4.0.0
Works fine with version <= 3.1.0 and below

Result of testing with different versions:

For loading I used Locust and wrote few tests to download different pacakges, as well as request /-/ping and /-/whoami endpoints

In test I have used:

		"verdaccio": "3.8.2" and "4.10.0",
		"verdaccio-audit": "^9.7.3",
		"verdaccio-ldap": "2.8.0", "3.1.0", "4.0.0", "4.0.1" 4.2.0"

This issue 82 might be connected to problem described above