fix: pom.xml to reduce vulnerabilities (#45)

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-ORGAPACHELOGGINGLOG4J-2321524

Author: snyk-bot

pom.xml

@@ -155,7 +155,7 @@
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-core</artifactId>
-            <version>2.16.0</version>
+            <version>2.17.0</version>
         </dependency>
         <dependency>
             <groupId>io.logz.sender</groupId>