ci(electron-ota): publish with GH_ACTION_TOKEN

[neerajhariyale]

Follow-up to #2137. The OTA publish workflow referenced a secret ELECTRON_PUBLISH_TOKEN that doesn't exist, and the repo account only has pull access to electron-build-repo — so a personal PAT can't publish there. Switch the publish step to the existing GH_ACTION_TOKEN secret (cross-repo PAT).

If GH_ACTION_TOKEN lacks contents:write on electron-build-repo, the publish step will fail with an auth error and we'll need an org-admin token.

🤖 Generated with Claude Code

[codacy-production]

Up to standards ✅

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