fix(deps): update dependency io.camunda:zeebe-client-java to v8.6.8

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
io.camunda:zeebe-client-java (source)	8.6.7 -> 8.6.8

---

Release Notes

camunda/camunda (io.camunda:zeebe-client-java)

v8.6.8

Compare Source

version:8.6.8

Bug Fixes

Misc

• CustomHeaders exposes values as indexable fields (#​27022)
• Tasklist archiver doesn't handle process instances when using Opensearch (#​26576)
• Variable can't be found in UI after process migration (#​26490)
• Non-Prometheus Micrometer implementations only expose few C8 metrics (#​26078)
• UnsupportedOperationException: Incorrect usage of actor.call(...) cannot be called from current actor. (#​25897)
• [CPT] hasCompletedElements() throws an IllegalStateException: Duplicate key null (#​25355)

Maintenance

• [FEEL] Store duration values in a normalized format (#​27098)

Merged Pull Requests

• refactor: return cmd settings in its own function (#​27569)
• refactor: move getBaseCommand in own function (#​27568)
• refactor: move set envVars in single function (#​27566)
• Drop usage of old Prometheus simple client for benchmarks module (#​27493)
• pg-27022-schema-validator-dynamic-field (#​27483)
• refactor: remove tasklist-list-view index (#​27293)
• fix: Store duration values in a normalized format (#​27161)
• ci: make sure also GHA *.yaml files are linted (#​27010)
• fix: ignore MIGRATED variable records (#​26914)
• fix: avoid actor call to unregister handlers when it is closing (#​26759)
• ci: add backport label when touching the deprecated java client in 8.6 (#​26742)
• fix: @​TestZeebe resources are closed even when constructed in a @​BeforeEach (#​26737)
• Replace usage of internal Junit 5 helper removed in Junit 5.11 (#​26722)
• ci: fix CAMUNDA_OPERATE_TASKLIST_URL parameter used in docker-compose (#​26643)
• fix 19883 bug on REST connection pooling (#​26317)
• [CPT] fix: Element assertion can handle BPMN elements with the same name (#​26234)
• fix: handle RawApiEntityConsumer buffer size correctly (#​24781)
• [Backport stable/1.2] Fixes flakiness with the ElasticsearchExporter integration tests (#​8203)

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.