build(deps): bump version.zeebe from 8.2.12 to 8.4.3

Bumps `version.zeebe` from 8.2.12 to 8.4.3.

Updates `io.camunda:zeebe-bom` from 8.2.12 to 8.4.3
- [Release notes](https://github.com/camunda/zeebe/releases)
- [Commits](camunda/camunda@8.2.12...8.4.3)

Updates `io.camunda:zeebe-build-tools` from 8.2.12 to 8.4.3
- [Release notes](https://github.com/camunda/zeebe/releases)
- [Commits](camunda/camunda@8.2.12...8.4.3)

---
updated-dependencies:
- dependency-name: io.camunda:zeebe-bom
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: io.camunda:zeebe-build-tools
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -36,7 +36,7 @@
       <license.header>${maven.multiModuleProjectDirectory}/COPYING-HEADER.txt</license.header>
 
       <!-- project dependencies -->
-      <version.zeebe>8.2.12</version.zeebe>
+      <version.zeebe>8.4.3</version.zeebe>
       <version.log4j>2.20.0</version.log4j>
       <version.junit>5.10.0</version.junit>
       <versin.assertj>3.24.2</versin.assertj>