PM-346: point call_jira_sync.yml at github-automation main

[dani-tweig]

.github/workflows/call_jira_sync.yml pinned the reusable Jira-sync workflow to commit 47138e9, so fixes merged to scylladb/github-automation main never reached this repository.

This points it at @main instead:

-    uses: scylladb/github-automation/.github/workflows/main_pr_events_jira_sync.yml@47138e9130250ee1a35166cff7dd0e94c8897196 # main
+    uses: scylladb/github-automation/.github/workflows/main_pr_events_jira_sync.yml@main

Only that one line changes — the on: triggers, permissions:, the caller_action input and the caller_jira_auth secret are all untouched, so no repository configuration is needed.

Fixes: PM-346

Part of PM-336.

[coderabbitai]

📝 Walkthrough

Walkthrough

The Jira synchronization workflow now references the reusable automation workflow from the main branch instead of a pinned commit.

Suggested reviewers: sylwiaszunejko

Merge Risk: 🟡 Moderate · up to b64ec

The workflow will now follow a mutable upstream branch while receiving Jira credentials, allowing upstream changes to alter credential handling without a change here. Pinning a reviewed commit or explicitly accepting this supply-chain risk is needed before merge.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the Jira sync workflow and the change from a pinned commit to the github-automation main branch.
Description check	✅ Passed	The description explains the change, its reason, unchanged configuration, and linked issues, but it omits the repository checklist.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files. (1 skipped: 1 unsupported.)
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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[coderabbitai]

Actionable comments posted: 1

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Inline comments:
In @.github/workflows/call_jira_sync.yml:
- Line 14: Update the reusable workflow reference in the
main_pr_events_jira_sync workflow invocation to pin it to commit
47138e9130250ee1a35166cff7dd0e94c8897196 instead of the mutable main branch.

🪄 Autofix

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: QUIET

Plan: Pro Plus

Run ID: 1aa0650e-5eb7-4ba7-8644-fa736e69fefb

📥 Commits

Reviewing files that changed from the base of the PR and between 7643078 and b64ec18.

📒 Files selected for processing (1)

• .github/workflows/call_jira_sync.yml

🔗 Linked repositories identified

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• scylladb/scylladb (auto-detected)

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