Bump log4j-core from 2.3 to 2.13.2 in /lib/java

Bumps log4j-core from 2.3 to 2.13.2.
Signed-off-by: Ndependabot[bot] <support@github.com>

lib/java/pom.xml

@@ -33,7 +33,7 @@
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-core</artifactId>
-            <version>2.3</version>
+            <version>2.13.2</version>
             <optional>true</optional>
             <scope>provided</scope>
         </dependency>