fix: pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-COMFASTERXMLJACKSONCORE-10500754

Author: snyk-bot

pom.xml

@@ -54,7 +54,7 @@
     <junit.version>5.9.1</junit.version>
     <junit-platform.version>1.9.1</junit-platform.version>
     <assertj-core.version>3.23.1</assertj-core.version>
-    <jackson.version>2.14.2</jackson.version>
+    <jackson.version>2.15.0</jackson.version>
     <selenium.version>4.18.0</selenium.version>
     <!-- same version as JMeter dependency -->
     <slf4j.version>1.7.36</slf4j.version>