fix release workflow

[pabloszel11]

Fixes the automatic release workflow which was never actually triggering correctly. Releases were being created manually via workflow_dispatch instead.

What changed

Fix

contents: read changed to contents: write, as release-please needs write access to push changelog updates and create the release PR. This is most likely the reason for it to silently do nothing.

Improvements

• Trigger changed from pull_request: closed to push: main, as the previous trigger fired on all PR closes including non-merges
• Added dependabot[bot] exclusion to skip release on dependency bump merges

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[github-actions]

The latest Buf updates on your PR. Results from workflow Buf CI / buf (pull_request).

Build	Format	Lint	Breaking	Updated (UTC)
✅ passed	✅ passed	✅ passed	✅ passed	Sep 17, 2026, 1:36 PM