fix: pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-COMFASTERXMLJACKSONCORE-7569538

Author: snyk-bot

pom.xml

@@ -26,7 +26,7 @@
         <casa.version>4.5.6-SNAPSHOT</casa.version>
         <ox.version>4.5.6-SNAPSHOT</ox.version>
         <log4j.version>2.17.2</log4j.version>
-        <jackson.version>2.14.0</jackson.version>
+        <jackson.version>2.15.0</jackson.version>
         <zk.version>9.6.0.2</zk.version>
         <ldapsdk.version>6.0.4</ldapsdk.version>
         <resteasy.version>4.7.8.Final</resteasy.version>