[ci] Update PR validation workflow

[nemesifier]

Checklist

• I have read the OpenWISP Contributing Guidelines and OpenWISP Anti AI Spam Policy.
• N/A. This GitHub Actions caller-workflow change has no local manual execution path.
• N/A. No application code changed.
• N/A. No user-facing behavior or documentation changed.

Reference to Existing Issue

Related to openwisp/openwisp-utils#716

Description of Changes

Adds edited and ready_for_review pull request events so the shared workflow promptly revalidates changed descriptions. Makes the concurrency key PR-specific so newer events cancel outdated validation runs.

Screenshot

N/A. This is a GitHub Actions workflow-only change.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: 4feb4d85-442d-4267-9475-68e1eb457aed

📥 Commits

Reviewing files that changed from the base of the PR and between 9de63c4 and eab1e14.

📒 Files selected for processing (1)

• .github/workflows/bot-autoassign-pr-issue-link.yml

📜 Recent review details

⏰ Context from checks skipped due to timeout. (1)

• GitHub Check: Kilo Code Review

🧰 Additional context used

🪛 zizmor (1.28.0)

.github/workflows/bot-autoassign-pr-issue-link.yml

[error] 7-7: overly broad permissions (excessive-permissions): issues: write is overly broad at the workflow level

(excessive-permissions)

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[warning] 7-7: permissions without explanatory comments (undocumented-permissions): needs an explanatory comment

(undocumented-permissions)

🔇 Additional comments (2)

.github/workflows/bot-autoassign-pr-issue-link.yml (2)

4-4: LGTM!

Also applies to: 9-10

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5-8: 🔒 Security & Privacy

Keep the minimum permissions needed by the reusable workflow.

This single-job, pull_request_target workflow only calls reusable-bot-autoassign.yml, so workflow-scoped issues: write correctly acts as the caller’s permission envelope here; there is no separate job to narrow further. Also note that using @master for a reusable workflow is a separate risk because it can acquire new permissions code at any time.

			> Likely an incorrect or invalid review comment.

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📝 Walkthrough

Walkthrough

The pull request automation workflow now triggers for opened, reopened, closed, edited, and ready_for_review events. Its concurrency group is keyed by repository and pull request number, without including the triggering event action.

Estimated code review effort: 1 (Trivial) | ~2 minutes

🚥 Pre-merge checks | ✅ 8

✅ Passed checks (8 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title is descriptive, uses the required [ci] type, and matches the workflow validation changes.
Description check	✅ Passed	The description covers the template sections and change details, but it does not close a specific issue with the required Closes # format.
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.
Bug Fixes	✅ Passed	Workflow-only GitHub Actions change; valid exception applies, so no regression test is required.
Features	✅ Passed	PASS: This PR only changes a GitHub Actions workflow; no feature/UI code, docs, or tests were added, so the feature-request checklist is not applicable.
Changes	✅ Passed	PASS: workflow-only change; no UI/docs/tests/public API impact detected, and PR marked screenshots/tests as N/A.
General Rules	✅ Passed	PASS: This is a small workflow-only change; no obvious security, performance, naming, comment, or AGENTS.md issues were introduced.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch ci/update-pr-validation-workflow

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