Bump log4j-api from 2.15.0 to 2.16.0

Bumps log4j-api from 2.15.0 to 2.16.0.

---
updated-dependencies:
- dependency-name: org.apache.logging.log4j:log4j-api
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

approvaltests-tests/pom.xml

@@ -45,7 +45,7 @@
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-api</artifactId>
-            <version>2.15.0</version>
+            <version>2.16.0</version>
         </dependency>
         <dependency>
                 <groupId>org.apache.velocity</groupId>

approvaltests-util-tests/pom.xml

@@ -49,7 +49,7 @@
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-api</artifactId>
-            <version>2.15.0</version>
+            <version>2.16.0</version>
             <optional>true</optional>
         </dependency>
         <dependency>

approvaltests-util/pom.xml

@@ -44,7 +44,7 @@
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-api</artifactId>
-            <version>2.15.0</version>
+            <version>2.16.0</version>
             <optional>true</optional>
         </dependency>
         <dependency>

approvaltests/pom.xml

@@ -49,7 +49,7 @@
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-api</artifactId>
-            <version>2.15.0</version>
+            <version>2.16.0</version>
             <scope>compile</scope>
             <optional>true</optional>
         </dependency>