[Bug]: Fix GitHub workflows errors for bot users

Attach (recommended) or Link to PDF file

N/A

Web browser and its version

Firefox 148.0

Operating system and its version

Arch Linux

PDF.js version

5.5.207 (and master)

Is the bug present in the latest PDF.js version?

Yes

Is a browser extension

No

Steps to reproduce the problem

If a bot user (Dependabot or the l10n update user) creates a PR the coverage tests fail to run as can be seen on e.g. https://github.com/mozilla/pdf.js/pull/20778. To merge such PRs we now have to bypass the checks, which is not what we want. It's unclear why this happens exactly, but we see this in the coverage workflow logs:

error - 2026-03-02 13:02:03,043 -- Upload failed: {"message":"Token required because branch is protected"}

What is the expected behavior?

The coverage workflows should pass, just like on regular users' PRs.

What went wrong?

The coverage workflows fail for bot users.

Link to a viewer

No response

Additional context

No response

Start with the coverage workflow logs and the example bot-created PR #20778, comparing them with a regular user's PR. Trace why the protected branch requires a token for Dependabot and l10n update users. Done means the coverage workflows pass for bot-created PRs without bypassing checks.