build(deps): bump log4j.version from 2.19.0 to 2.23.0 in /java

Bumps `log4j.version` from 2.19.0 to 2.23.0.

Updates `org.apache.logging.log4j:log4j-api` from 2.19.0 to 2.23.0

Updates `org.apache.logging.log4j:log4j-core` from 2.19.0 to 2.23.0

Updates `org.apache.logging.log4j:log4j-slf4j-impl` from 2.19.0 to 2.23.0

---
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
- dependency-name: org.apache.logging.log4j:log4j-slf4j-impl
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

java/pom.xml

@@ -12,7 +12,7 @@
     <maven.compiler.source>11</maven.compiler.source>
     <maven.compiler.target>11</maven.compiler.target>
     <zeebe.version>8.4.1</zeebe.version>
-    <log4j.version>2.19.0</log4j.version>
+    <log4j.version>2.23.0</log4j.version>
     <main.class>io.camunda.getstarted.DeployAndStartInstance</main.class>
   </properties>