Log Message:
net/ruby-net-ldap: update to 0.16.2

Update ruby-net-ldap to 0.16.2.

=== Net::LDAP 0.16.2

* Net::LDAP#open does not cache bind result \ 
{#334}[https://github.com/ruby-ldap/ruby-net-ldap/pull/334]
* Fix CI build {#333}[https://github.com/ruby-ldap/ruby-net-ldap/pull/333]
* Fix to "undefined method 'result_code'" \ 
{#308}[https://github.com/ruby-ldap/ruby-net-ldap/pull/308]
* Fixed Exception: incompatible character encodings: ASCII-8BIT and UTF-8 in \ 
filter.rb {#285}[https://github.com/ruby-ldap/ruby-net-ldap/pull/285]