chore(deps): update camunda/zeebe docker tag to v8.6.3

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
camunda/zeebe (source)	patch	8.6.2 -> 8.6.3

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Release Notes

camunda/camunda (camunda/zeebe)

### [`v8.6.3`](https://redirect.github.com/camunda/camunda/releases/tag/8.6.3) [Compare Source](https://redirect.github.com/camunda/camunda/compare/8.6.2...8.6.3) #### Bug Fixes ##### Java Client - spring-boot-starter-camunda-sdk will run into a NPE if legacy 8.5 properties are used ([#​23183](https://redirect.github.com/camunda/camunda/issues/23183))

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Configuration

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