pip: bump jupyter-book from 2.1.2 to 2.1.4 (#1955)

Bumps [jupyter-book](https://github.com/jupyter-book/jupyter-book) from
2.1.2 to 2.1.4.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/jupyter-book/jupyter-book/releases">jupyter-book's
releases</a>.</em></p>
<blockquote>
<h2>v2.1.4</h2>
<h2>2.1.4</h2>
<p>(<a
href="https://github.com/jupyter-book/jupyter-book/compare/v2.1.3...a3f7741f752c1b5c20467fbb70f337907e44f567">Full
Changelog</a>)</p>
<h3>Maintenance and upkeep improvements</h3>
<ul>
<li>bump myst version <a
href="https://redirect.github.com/jupyter-book/jupyter-book/pull/2607">#2607</a>
(<a
href="https://github.com/choldgraf"><code>@​choldgraf</code></a>)</li>
<li>🔑 Remove NPM_TOKEN in publish workflow <a
href="https://redirect.github.com/jupyter-book/jupyter-book/pull/2605">#2605</a>
(<a href="https://github.com/agoose77"><code>@​agoose77</code></a>)</li>
<li>Bump MyST and add toc children option <a
href="https://redirect.github.com/jupyter-book/jupyter-book/pull/2600">#2600</a>
(<a
href="https://github.com/choldgraf"><code>@​choldgraf</code></a>)</li>
<li>Bump actions/setup-python from 5 to 6 in /.github/workflows in the
actions group <a
href="https://redirect.github.com/jupyter-book/jupyter-book/pull/2596">#2596</a>
(<a href="https://github.com/agoose77"><code>@​agoose77</code></a>)</li>
</ul>
<h3>Documentation improvements</h3>
<ul>
<li>Docs: patch url for v1 docs (<code>*/v1</code> --&gt;
<code>*/v1/intro.html</code>) <a
href="https://redirect.github.com/jupyter-book/jupyter-book/pull/2598">#2598</a>
(<a href="https://github.com/evdcush"><code>@​evdcush</code></a>, <a
href="https://github.com/bsipocz"><code>@​bsipocz</code></a>)</li>
</ul>
<h3>Contributors to this release</h3>
<p>The following people contributed discussions, new ideas, code and
documentation contributions, and review.
See <a
href="https://github-activity.readthedocs.io/en/latest/use/#how-does-this-tool-define-contributions-in-the-reports">our
definition of contributors</a>.</p>
<p>(<a
href="https://github.com/jupyter-book/jupyter-book/graphs/contributors?from=2026-02-13&amp;to=2026-04-01&amp;type=c">GitHub
contributors page for this release</a>)</p>
<p><a href="https://github.com/agoose77"><code>@​agoose77</code></a> (<a
href="https://github.com/search?q=repo%3Ajupyter-book%2Fjupyter-book+involves%3Aagoose77+updated%3A2026-02-13..2026-04-01&amp;type=Issues">activity</a>)
| <a href="https://github.com/bsipocz"><code>@​bsipocz</code></a> (<a
href="https://github.com/search?q=repo%3Ajupyter-book%2Fjupyter-book+involves%3Absipocz+updated%3A2026-02-13..2026-04-01&amp;type=Issues">activity</a>)
| <a href="https://github.com/choldgraf"><code>@​choldgraf</code></a>
(<a
href="https://github.com/search?q=repo%3Ajupyter-book%2Fjupyter-book+involves%3Acholdgraf+updated%3A2026-02-13..2026-04-01&amp;type=Issues">activity</a>)
| <a href="https://github.com/evdcush"><code>@​evdcush</code></a> (<a
href="https://github.com/search?q=repo%3Ajupyter-book%2Fjupyter-book+involves%3Aevdcush+updated%3A2026-02-13..2026-04-01&amp;type=Issues">activity</a>)</p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li>See full diff in <a
href="https://github.com/jupyter-book/jupyter-book/compare/v2.1.2...v2.1.4">compare
view</a></li>
</ul>
</details>
<br />

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

tests/requirements.txt

@@ -13,6 +13,6 @@ lmdb==1.6.2
 pymatgen==v2026.3.23
 ray[serve]==2.54.1
 ipykernel==7.2.0
-jupyter_book==2.1.2
+jupyter_book==2.1.4
 pytest-xdist==3.8.0
 nvalchemi-toolkit-ops==0.2.0