ci: optimize semantic pr title workflow (@d1rshan)

[d1rshan]

Description

This PR improves the semantic PR title workflow by reducing unnecessary runs and comment updates without changing the title validation rules themselves.

The workflow currently runs for all PR edits, even when only the description changes, and it may keep older in-progress runs alive when a newer event for the same PR has already started. It can also attempt to rewrite the sticky error comment even when the message has not changed.

Changes

• switches the workflow runner from ubuntu-latest to ubuntu-slim, since this job only validates PR metadata and posts a comment
• adds concurrency so older in-progress runs for the same PR are canceled when a newer one starts
• skips edited events unless the PR title actually changed
• avoids rewriting the sticky error comment when the content is unchanged

These changes keep the workflow behavior the same for contributors while making the workflow more efficient.

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	vite@​8.0.5

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[Copilot]

Pull request overview

Optimizes the “Semantic PR Title” GitHub Actions workflow to reduce redundant executions and unnecessary sticky-comment updates, while keeping the title validation rules unchanged.

Changes:

• Add concurrency to cancel older in-progress runs for the same PR.
• Skip pull_request_target.edited runs when the PR title didn’t change.
• Avoid rewriting the sticky error comment when its content is unchanged.