Bump log4j-core from 2.15.0 to 2.16.0

Bumps log4j-core from 2.15.0 to 2.16.0.

---
updated-dependencies:
- dependency-name: org.apache.logging.log4j:log4j-core
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pom.xml

@@ -61,7 +61,7 @@
         <checkstyle.version>8.32</checkstyle.version>
 
         <!-- Log4J Version -->
-        <log4j2.version>2.15.0</log4j2.version>
+        <log4j2.version>2.16.0</log4j2.version>
         <slf4j.version>1.7.32</slf4j.version>
 
         <!-- test toggling -->