Bump net-ldap from 0.16.1 to 0.16.2 (#12479)

Bumps [net-ldap](https://github.com/ruby-ldap/ruby-net-ldap) from 0.16.1 to 0.16.2.
- [Release notes](https://github.com/ruby-ldap/ruby-net-ldap/releases)
- [Changelog](https://github.com/ruby-ldap/ruby-net-ldap/blob/master/History.rdoc)
- [Commits](https://github.com/ruby-ldap/ruby-net-ldap/compare/v0.16.1...v0.16.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Gemfile

@@ -38,7 +38,7 @@ group :pam_authentication, optional: true do
   gem 'devise_pam_authenticatable2', '~> 9.2'
 end
 
-gem 'net-ldap', '~> 0.10'
+gem 'net-ldap', '~> 0.16'
 gem 'omniauth-cas', '~> 1.1'
 gem 'omniauth-saml', '~> 1.10'
 gem 'omniauth', '~> 1.9'