fix(deps): update dependency io.camunda.spring:spring-boot-starter-camunda-test to v8.5.6

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
io.camunda.spring:spring-boot-starter-camunda-test (source)	8.5.5 -> 8.5.6

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Release Notes

camunda-community-hub/spring-zeebe (io.camunda.spring:spring-boot-starter-camunda-test)

### [`v8.5.6`](https://togithub.com/camunda-community-hub/spring-zeebe/releases/tag/8.5.6) [Compare Source](https://togithub.com/camunda-community-hub/spring-zeebe/compare/8.5.5...8.5.6) #### What's Changed - fix(deps): update zeebe.version to v8.5.3 (release/8.5) by [@​renovate](https://togithub.com/renovate) in [https://github.com/camunda-community-hub/spring-zeebe/pull/840](https://togithub.com/camunda-community-hub/spring-zeebe/pull/840) - chore(deps): update dependency maven to v3.9.8 (release/8.5) by [@​renovate](https://togithub.com/renovate) in [https://github.com/camunda-community-hub/spring-zeebe/pull/845](https://togithub.com/camunda-community-hub/spring-zeebe/pull/845) - add missing field to process instance ([#​847](https://togithub.com/camunda-community-hub/spring-zeebe/issues/847)) by [@​jonathanlukas](https://togithub.com/jonathanlukas) in [https://github.com/camunda-community-hub/spring-zeebe/pull/849](https://togithub.com/camunda-community-hub/spring-zeebe/pull/849) **Full Changelog**: https://github.com/camunda-community-hub/spring-zeebe/compare/8.5.5...8.5.6

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