Bump unboundid-ldapsdk from 5.1.4 to 6.0.0 in /core

Bumps [unboundid-ldapsdk](https://github.com/pingidentity/ldapsdk) from 5.1.4 to 6.0.0.
- [Release notes](https://github.com/pingidentity/ldapsdk/releases)
- [Changelog](https://github.com/pingidentity/ldapsdk/blob/master/docs/release-notes.html)
- [Commits](https://github.com/pingidentity/ldapsdk/compare/5.1.4...6.0.0)

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

Closes #199

Change-Id: I86fe485042a79b7db83d073e3cc76f1a9b88e7a9
diff --git a/core/pom.xml b/core/pom.xml
index 991e6cc..b41da08 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -459,7 +459,7 @@
 		<dependency>
 			<groupId>com.unboundid</groupId>
 			<artifactId>unboundid-ldapsdk</artifactId>
-			<version>5.1.4</version>
+			<version>6.0.0</version>
 		</dependency>
 
 		<!-- not part of public release <dependency> <groupId>KorAP-graphDB</groupId>