Pass the authentication to `format_pr_entry`

[fcollonval]

Fixes #490

[codecov[bot]]

Codecov Report

Base: 82.10% // Head: 82.10% // Increases project coverage by +0.00% :tada:

Coverage data is based on head (dff3d4a) compared to base (dcaef66). Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #489 +/- ## ======================================= Coverage 82.10% 82.10% ======================================= Files 20 20 Lines 2816 2817 +1 Branches 516 516 ======================================= + Hits 2312 2313 +1 Misses 373 373 Partials 131 131 ``` | [Impacted Files](https://codecov.io/gh/jupyter-server/jupyter_releaser/pull/489?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jupyter-server) | Coverage Δ | | |---|---|---| | [jupyter\_releaser/changelog.py](https://codecov.io/gh/jupyter-server/jupyter_releaser/pull/489?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jupyter-server#diff-anVweXRlcl9yZWxlYXNlci9jaGFuZ2Vsb2cucHk=) | `72.72% <100.00%> (ø)` | | | [jupyter\_releaser/lib.py](https://codecov.io/gh/jupyter-server/jupyter_releaser/pull/489?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jupyter-server#diff-anVweXRlcl9yZWxlYXNlci9saWIucHk=) | `80.68% <100.00%> (+0.06%)` | :arrow_up: | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jupyter-server). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jupyter-server)

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