build(deps): bump zeebe.version from 8.5.5 to 8.6.6

Bumps `zeebe.version` from 8.5.5 to 8.6.6.

Updates `io.camunda:zeebe-client-java` from 8.5.5 to 8.6.6
- [Release notes](https://github.com/camunda/camunda/releases)
- [Changelog](https://github.com/camunda/camunda/blob/main/CHANGELOG.md)
- [Commits](camunda/camunda@8.5.5...8.6.6)

Updates `io.camunda:zeebe-process-test-api` from 8.5.5 to 8.6.6
- [Commits](https://github.com/camunda-community-hub/zeebe-process-test-root/commits)

Updates `io.camunda:zeebe-process-test-assertions` from 8.5.5 to 8.6.6
- [Commits](https://github.com/camunda-community-hub/zeebe-process-test-root/commits)

Updates `io.camunda:zeebe-process-test-engine` from 8.5.5 to 8.6.6
- [Commits](https://github.com/camunda-community-hub/zeebe-process-test-root/commits)

Updates `io.camunda:zeebe-protocol-jackson` from 8.5.5 to 8.6.6
- [Release notes](https://github.com/camunda/camunda/releases)
- [Changelog](https://github.com/camunda/camunda/blob/main/CHANGELOG.md)
- [Commits](camunda/camunda@8.5.5...8.6.6)

---
updated-dependencies:
- dependency-name: io.camunda:zeebe-client-java
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: io.camunda:zeebe-process-test-api
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: io.camunda:zeebe-process-test-assertions
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: io.camunda:zeebe-process-test-engine
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: io.camunda:zeebe-protocol-jackson
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -24,7 +24,7 @@
   </scm>
   <properties>
     <quarkus.version>3.13.2</quarkus.version>
-    <zeebe.version>8.5.5</zeebe.version>
+    <zeebe.version>8.6.6</zeebe.version>
     <zeebe.testcontainers.version>3.6.5</zeebe.testcontainers.version>
     <maven.compiler.source>17</maven.compiler.source>
     <maven.compiler.target>17</maven.compiler.target>