fix: remove unused test connection pod

[hisImminence]

Which problem does the PR fix?

Removes connection pods from the each version of the Helm Charts. They were used in the past to check the health of the applications but are not needed anymore as we only should rely on the health/readiness checks moving forward.

hint for review: Follow the single commits to see the changes separated per camunda-chart

related to: #2984 (comment)

What's in this PR?

Checklist

Please make sure to follow our Contributing Guide.

Before opening the PR:

• In the repo's root dir, run make go.update-golden-only.
• There is no other open pull request for the same update/change.
• Tests for charts are added (if needed).
• In-repo documentation are updated (if needed).

After opening the PR:

• Did you sign our CLA (Contributor License Agreement)? It will show once you open the PR.
• Did all checks/tests pass in the PR?

[aabouzaid]

@hisImminence I've made a small change to detect deleted files.

Based on tj-actions/changed-files docs, the output all_changed_files doesn't detect the deleted files, only edited ones.

Swtiching to all_modified_files fixed the issue.

[hisImminence]

@hisImminence I've made a small change to detect deleted files.

Based on tj-actions/changed-files docs, the output all_changed_files doesn't detect the deleted files, only edited ones.

Swtiching to all_modified_files fixed the issue.

Nice! This should then also prevent bugs like https://camunda.slack.com/archives/C06BN4SRB6C/p1740481289713889?thread_ts=1740473152.702229&cid=C06BN4SRB6C moving forward!

Thanks @aabouzaid!