build(deps): bump certifi from 2025.1.31 to 2025.6.15 in /tools/publish (bazel-contrib#2999)

Bumps [certifi](https://github.com/certifi/python-certifi) from
2025.1.31 to 2025.6.15.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/certifi/python-certifi/commit/e767d5938eddddf804216cec93a55c85129c5f2d"><code>e767d59</code></a>
2025.06.15 (<a
href="https://redirect.github.com/certifi/python-certifi/issues/357">#357</a>)</li>
<li><a
href="https://github.com/certifi/python-certifi/commit/3e7076557d66b598fcca462e422dc988f09a6802"><code>3e70765</code></a>
Bump actions/setup-python from 5.5.0 to 5.6.0</li>
<li><a
href="https://github.com/certifi/python-certifi/commit/9afd2ff407b8a0638988c952a6636b8dd623af7c"><code>9afd2ff</code></a>
Bump actions/download-artifact from 4.2.1 to 4.3.0</li>
<li><a
href="https://github.com/certifi/python-certifi/commit/d7c816cbc9cf621b3ddc8cd7fa7eda3f36982620"><code>d7c816c</code></a>
remove code that's no longer required that 3.7 is our minimum (<a
href="https://redirect.github.com/certifi/python-certifi/issues/351">#351</a>)</li>
<li><a
href="https://github.com/certifi/python-certifi/commit/189961379209973abd0dd6304297f03e2359e1b9"><code>1899613</code></a>
Declare setuptools as the build backend in pyproject.toml (<a
href="https://redirect.github.com/certifi/python-certifi/issues/350">#350</a>)</li>
<li><a
href="https://github.com/certifi/python-certifi/commit/c8741423d67e1025c0bdad5225ded05cf962f207"><code>c874142</code></a>
update CI for ubuntu 20.04 deprecation (<a
href="https://redirect.github.com/certifi/python-certifi/issues/348">#348</a>)</li>
<li><a
href="https://github.com/certifi/python-certifi/commit/275c9eb55733a464589c15fb4566fddd4598e5b2"><code>275c9eb</code></a>
2025.04.26 (<a
href="https://redirect.github.com/certifi/python-certifi/issues/347">#347</a>)</li>
<li><a
href="https://github.com/certifi/python-certifi/commit/37883310b51e56570919cdc2d44becc1c6940559"><code>3788331</code></a>
Bump actions/setup-python from 5.4.0 to 5.5.0 (<a
href="https://redirect.github.com/certifi/python-certifi/issues/346">#346</a>)</li>
<li><a
href="https://github.com/certifi/python-certifi/commit/9d1f1b782000baedf57026de5b79e193bcb7ef7b"><code>9d1f1b7</code></a>
Bump actions/download-artifact from 4.1.9 to 4.2.1 (<a
href="https://redirect.github.com/certifi/python-certifi/issues/344">#344</a>)</li>
<li><a
href="https://github.com/certifi/python-certifi/commit/96b97a5afe26bc1adef98cb0bfe68e34948a73b6"><code>96b97a5</code></a>
Bump actions/upload-artifact from 4.6.1 to 4.6.2 (<a
href="https://redirect.github.com/certifi/python-certifi/issues/343">#343</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/certifi/python-certifi/compare/2025.01.31...2025.06.15">compare
view</a></li>
</ul>
</details>
<br />


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Author: dependabot[bot]