fix: pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-8186141
- https://snyk.io/vuln/SNYK-JAVA-ORGECLIPSEJETTY-8186158

pom.xml

@@ -51,7 +51,7 @@
         <java.version>11</java.version>
         <kotlin.version>2.0.20</kotlin.version>
         <kotlin.coroutines.version>1.9.0</kotlin.coroutines.version>
-        <neo4j.version>4.4.37</neo4j.version>
+        <neo4j.version>5.26.1</neo4j.version>
         <!-- Version 3.4 is the minimal version introducing version for CVE-2023-25194 -->
         <kafka.version>3.8.0</kafka.version>
         <jackson.version>2.17.1</jackson.version>