Bump log4j2.version from 2.19.0 to 2.20.0 (#110)

Bumps `log4j2.version` from 2.19.0 to 2.20.0.

Updates `log4j-api` from 2.19.0 to 2.20.0
- [Release notes](https://github.com/apache/logging-log4j2/releases)
- [Changelog](https://github.com/apache/logging-log4j2/blob/release-2.x/CHANGELOG.adoc)
- [Commits](apache/logging-log4j2@rel/2.19.0...rel/2.20.0)

Updates `log4j-core` from 2.19.0 to 2.20.0
- [Release notes](https://github.com/apache/logging-log4j2/releases)
- [Changelog](https://github.com/apache/logging-log4j2/blob/release-2.x/CHANGELOG.adoc)
- [Commits](apache/logging-log4j2@rel/2.19.0...rel/2.20.0)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Tim Allison <tallison@apache.org>

pom.xml

@@ -38,7 +38,7 @@
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <junit.version>5.9.2</junit.version>
     <jackson.version>2.14.2</jackson.version>
-    <log4j2.version>2.19.0</log4j2.version>
+    <log4j2.version>2.20.0</log4j2.version>
     <puppycrawl.version>10.9.3</puppycrawl.version>
   </properties>