Use Vector Helm chart version 0.34.0 in the logging test

[siegfriedweber]

Description

Use Vector Helm chart version 0.34.0 (Vector 0.39.0) in the logging test

https://github.com/vectordotdev/helm-charts/blob/vector-0.34.0/CHANGELOG.md#vector-0340---2024-06-17

Implements stackabletech/docker-images#561

Definition of Done Checklist

• Not all of these items are applicable to all PRs, the author should update this template to only leave the boxes in that are relevant
• Please make sure all these things are done and tick the boxes

Author

Beta Give feedback

1. Integration tests passed locally

Reviewer

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1. Code contains useful comments
2. Code contains useful logging statements
3. (Integration-)Test cases added
4. Documentation added or updated. Follows the style guide.
5. Changelog updated
6. Cargo.toml only contains references to git tags (not specific commits or branches)

Acceptance

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1. Feature Tracker has been updated
2. Proper release label has been added
3. Roadmap has been updated

[maltesander]

LGTM!