fix: upgrade net.minidev:json-smart from 2.5.2 to 2.6.0

Snyk has created this PR to upgrade net.minidev:json-smart from 2.5.2 to 2.6.0.

See this package in maven:
net.minidev:json-smart

See this project in Snyk:
https://app.snyk.io/org/anbo-de/project/98b44530-29e3-4290-bb5d-01253d7cc55a?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

qald-evaluator/pom.xml

@@ -65,7 +65,7 @@
         <dependency>
             <groupId>net.minidev</groupId>
             <artifactId>json-smart</artifactId>
-            <version>2.5.2</version>
+            <version>2.6.0</version>
         </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>