refactor: use log4j-version variable

Signed-off-by: Victor Adossi <[email protected]>

Author: Victor Adossi

pom.xml

@@ -251,7 +251,7 @@
       <dependency>
         <groupId>org.apache.logging.log4j</groupId>
         <artifactId>log4j-bom</artifactId>
-        <version>2.16.0</version>
+        <version>${log4j-version}</version>
         <scope>import</scope>
         <type>pom</type>
       </dependency>