build(deps): bump org.apache.directory.api:api-ldap-model

Bumps org.apache.directory.api:api-ldap-model from 2.1.5 to 2.1.6.

---
updated-dependencies:
- dependency-name: org.apache.directory.api:api-ldap-model
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

dependencies.gradle

@@ -31,7 +31,7 @@ ext {
 
 // Dependencies (some rely on shared versions, some are shared between projects)
 libraries.apacheDsProtocolLdap = "org.apache.directory.server:apacheds-protocol-ldap:${versions.apacheDsVersion}"
-libraries.apacheLdapApi = "org.apache.directory.api:api-ldap-model:2.1.5"
+libraries.apacheLdapApi = "org.apache.directory.api:api-ldap-model:2.1.6"
 libraries.asciidoctorGradlePlugin = "org.asciidoctor:asciidoctor-gradle-plugin:1.6.1"
 libraries.aspectJRt = "org.aspectj:aspectjrt"
 libraries.aspectJWeaver = "org.aspectj:aspectjweaver"