Update Log4J dependency to 2.16.0 (#191)

Author: Chris Cho

source/fundamentals/logging.txt

@@ -170,7 +170,7 @@ tab corresponding to the logging framework you would like to use in your project
                <dependency>
                  <groupId>org.apache.logging.log4j</groupId>
                  <artifactId>log4j-slf4j-impl</artifactId>
-                 <version>2.15.0</version>
+                 <version>2.16.0</version>
                </dependency>
 
          .. tab:: Gradle
@@ -181,7 +181,7 @@ tab corresponding to the logging framework you would like to use in your project
             .. code-block:: none
 
                dependencies {
-                  implementation 'org.apache.logging.log4j:log4j-slf4j-impl:2.15.0'
+                  implementation 'org.apache.logging.log4j:log4j-slf4j-impl:2.16.0'
                }
 
       Once you have included the preceding dependency, log an error using the