build(deps): bump log4j.version from 2.19.0 to 2.20.0 (#1065)

Bumps `log4j.version` from 2.19.0 to 2.20.0.

Updates `log4j-core` from 2.19.0 to 2.20.0
Updates `log4j-slf4j-impl` from 2.19.0 to 2.20.0
Updates `log4j-api` from 2.19.0 to 2.20.0
Updates `log4j-layout-template-json` from 2.19.0 to 2.20.0

Author: dependabot[bot]

pom.xml

@@ -56,7 +56,7 @@
     <properties>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
-        <log4j.version>2.19.0</log4j.version>
+        <log4j.version>2.20.0</log4j.version>
         <jackson.version>2.14.2</jackson.version>
         <aspectj.version>1.9.7</aspectj.version>
         <aws.sdk.version>2.20.9</aws.sdk.version>