build(deps): bump org.pitest:pitest-maven from 1.23.0 to 1.23.1 (#433)

Bumps [org.pitest:pitest-maven](https://github.com/hcoles/pitest) from
1.23.0 to 1.23.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/hcoles/pitest/releases">org.pitest:pitest-maven's
releases</a>.</em></p>
<blockquote>
<h2>1.23.1</h2>
<ul>
<li><a
href="https://redirect.github.com/hcoles/pitest/issues/1463">#1463</a>
extend unmodifiable collections filtering</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/hcoles/pitest/commit/97b4bc48696a9b18005292203ada3b036b96f8a5"><code>97b4bc4</code></a>
Merge pull request <a
href="https://redirect.github.com/hcoles/pitest/issues/1463">#1463</a>
from hcoles/feature/extend_unmofiable_filter</li>
<li><a
href="https://github.com/hcoles/pitest/commit/9f93c02672287bf63d4827bb44490fb8eb63e8c0"><code>9f93c02</code></a>
filter unmodifiable Map.copyOf</li>
<li><a
href="https://github.com/hcoles/pitest/commit/43be4cf01a67eb045122cfc2776ae5952326812c"><code>43be4cf</code></a>
filter unmodifiable Collections.singleton</li>
<li><a
href="https://github.com/hcoles/pitest/commit/aa42551fa0a444e9a489d1563cca92d65cc94735"><code>aa42551</code></a>
add support link to report</li>
<li><a
href="https://github.com/hcoles/pitest/commit/f2ec3b2dd3cb21da181ab08406b3be18590862bc"><code>f2ec3b2</code></a>
add funding info</li>
<li>See full diff in <a
href="https://github.com/hcoles/pitest/compare/1.23.0...1.23.1">compare
view</a></li>
</ul>
</details>
<br />

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

Author: dependabot[bot]

pom.xml

@@ -53,7 +53,7 @@
     <jacoco-maven-plugin.version>0.8.14</jacoco-maven-plugin.version>
     <junit-platform-maven-plugin.version>1.1.8</junit-platform-maven-plugin.version>
     <license-maven-plugin.version>5.0.0</license-maven-plugin.version>
-    <pitest-maven.version>1.23.0</pitest-maven.version>
+    <pitest-maven.version>1.23.1</pitest-maven.version>
     <pitest-junit5-plugin.version>1.2.3</pitest-junit5-plugin.version>
     <versions-maven-plugin.version>2.21.0</versions-maven-plugin.version>
     <maven-failsafe-plugin.version>3.5.5</maven-failsafe-plugin.version>