pip: bump regex from 2023.10.3 to 2023.12.25 (#179)

Bumps [regex](https://github.com/mrabarnett/mrab-regex) from 2023.10.3
to 2023.12.25.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/mrabarnett/mrab-regex/blob/hg/changelog.txt">regex's
changelog</a>.</em></p>
<blockquote>
<p>Version: 2023.12.25</p>
<pre><code>Cannot get release notification action in main.yml to work.
Commenting it out for now.
</code></pre>
<p>Version: 2023.12.24</p>
<pre><code>Fixed invalid main.yml.
</code></pre>
<p>Version: 2023.12.23</p>
<pre><code>The escape function no longer escapes \x00. It's not
necessary.
<p>Inline flags can now be turned off and apply to what follows.</p>
<p>Added \R to match line endings.
</code></pre></p>
<p>Version: 2023.10.3</p>
<pre><code>Updated to Unicode 15.1.0.
</code></pre>
<p>Version: 2023.8.8</p>
<pre><code>Git issue 508: Regex doesn't build using CPython main
(3.13.0a0)
Removed usage of _PyBytes_Join and did a little tidying of the code that
makes the result string.
</code></pre>
<p>Version: 2023.6.3</p>
<pre><code>Git issue 498: Conditional negative lookahead inside positive
lookahead fails to match
Conditional node needed an additional member that points to the true
branch.
</code></pre>
<p>Version: 2023.5.5</p>
<pre><code>Removed semicolon after 'else' in 'munge_name'.
</code></pre>
<p>Version: 2023.5.4</p>
<pre><code>Fixed pyproject.toml and setup.py.
</code></pre>
<p>Version: 2023.5.3</p>
<pre><code>pyproject.toml was missing.
</code></pre>
<p>Version: 2023.5.2</p>
<pre><code>Added pyproject.toml.
</code></pre>
<p>Version: 2023.3.23</p>
<pre><code>Git issue 495: Running time for failing fullmatch increases
rapidly with input length
Re-enabled modified repeat guards due to regression in speed caused by
excessive backtracking.
</code></pre>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/mrabarnett/mrab-regex/commit/647c006a88c553a694118e8cae109aa9365f188f"><code>647c006</code></a>
Further fixes in main.yml.</li>
<li><a
href="https://github.com/mrabarnett/mrab-regex/commit/d0afd79fbabd03a64ae2250e4b5701af8e997ebb"><code>d0afd79</code></a>
Another fix in main.yml.</li>
<li><a
href="https://github.com/mrabarnett/mrab-regex/commit/c1f1f2af4cc6b9de91f399d88ec6c2e1537c25ab"><code>c1f1f2a</code></a>
Fixed invalid main.yml.</li>
<li><a
href="https://github.com/mrabarnett/mrab-regex/commit/cdcbf36aebb0e5d54072bd96a6fe4932f1fd6ae0"><code>cdcbf36</code></a>
The escape function no longer escapes \x00. It's not necessary.</li>
<li>See full diff in <a
href="https://github.com/mrabarnett/mrab-regex/compare/2023.10.3...2023.12.25">compare
view</a></li>
</ul>
</details>
<br />


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pip-requirements.txt

@@ -16,5 +16,5 @@ edk2-pytool-library==0.19.8
 edk2-pytool-extensions==0.26.4
 edk2-basetools==0.1.49
 antlr4-python3-runtime==4.13.1
-regex==2023.10.3
+regex==2023.12.25
 pygount==1.6.1