Bump kotlin.version from 1.8.10 to 1.8.20 in /value

Bumps `kotlin.version` from 1.8.10 to 1.8.20.
Updates `kotlin-stdlib` from 1.8.10 to 1.8.20
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/JetBrains/kotlin/releases">kotlin-stdlib's releases</a>.</em></p>
<blockquote>
<h2>Kotlin 1.8.20-RC2</h2>
<h2>Changelog</h2>
<h3>Compiler</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-57388"><code>KT-57388</code></a> Kapt+JVM_IR: &quot;RuntimeException: No type for expression&quot; for delegated property</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-57242"><code>KT-57242</code></a> Equals behaviour for value classes implementing interfaces is different between 1.8.10 and 1.8.20-RC</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-57261"><code>KT-57261</code></a> &quot;IllegalArgumentException was thrown at: MemoizedInlineClassReplacements.getSpecializedEqualsMethod&quot; when comparing non-inline class instance with an inline class instance</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-56527"><code>KT-56527</code></a> K2: &quot;AssertionError: Assertion failed&quot; during compilation in SequentialFilePositionFinder</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-57107"><code>KT-57107</code></a> Handling of Windows line endings CRLF broken in latest snapshot with K2</li>
</ul>
<h3>Tools. Gradle</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-57296"><code>KT-57296</code></a> Build statistics sending errors in case of buildSrc directory usage with kotlin-dsl plugin applied</li>
</ul>
<h3>Tools. Gradle. JS</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-57285"><code>KT-57285</code></a> KJS / Gradle / MPP: FileNotFoundException on publishing empty KJS sourceset</li>
</ul>
<h3>Tools. Gradle. Multiplatform</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-57460"><code>KT-57460</code></a> Kotlin Gradle Plugin: Null <code>this</code> pointer in transformCommonMainDependenciesMetadata</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-57306"><code>KT-57306</code></a> [Kotlin 1.8.20-RC] GradleException: Could not load the value of field <code>apiConfiguration</code> of <code>org.jetbrains.kotlin.gradle.plugin.mpp.compilationImpl.DefaultKotlinCompilationConfigurationsContainer</code></li>
</ul>
<h2>Checksums</h2>
<table>
<thead>
<tr>
<th>File</th>
<th>Sha256</th>
</tr>
</thead>
<tbody>
<tr>
<td>kotlin-compiler-1.8.20-RC2.zip</td>
<td>0db23d86962bece7577c19b76ec6b27611e5c4b7c70e93d71451d289e6a7741b</td>
</tr>
<tr>
<td>kotlin-native-linux-x86_64-1.8.20-RC2.tar.gz</td>
<td>e38429bd0f778689c3953d4c3d5aa67c30fc9c39c0fa4d75463fa645356aa97b</td>
</tr>
<tr>
<td>kotlin-native-macos-x86_64-1.8.20-RC2.tar.gz</td>
<td>0939c73f2d30b0eaed826d2dd3eb6ce0a4720ccaa48a8fed2b9439b3168273ef</td>
</tr>
<tr>
<td>kotlin-native-macos-aarch64-1.8.20-RC2.tar.gz</td>
<td>536fb2d6f26d4f9ed351a07c8673fe3c8d669cedc983b6151ef1d36f8bd564b4</td>
</tr>
<tr>
<td>kotlin-native-windows-x86_64-1.8.20-RC2.zip</td>
<td>2fd80c2f59125469d17d35a79c7711302875f8dd4a0403d6e0885e678a099ece</td>
</tr>
</tbody>
</table>
<h2>Kotlin 1.8.20-RC</h2>
<h2>Changelog</h2>
<h3>Backend. Wasm</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-56584"><code>KT-56584</code></a> K/Wasm: Can't link symbol class</li>
</ul>
<h3>Compiler</h3>
<h4>Fixes</h4>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-57053"><code>KT-57053</code></a> Problem around anonymous objects in inline functions</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-56965"><code>KT-56965</code></a> K/N: linkDebugFrameworkIosArm64 tasks failing with UnsupportedOperationException: VAR name:disposables type:com.badoo.reaktive.disposable.CompositeDisposable [val]</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-56815"><code>KT-56815</code></a> compileKotlin task is stuck with while(true) and suspend function</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-56258"><code>KT-56258</code></a> VerifyError: Bad local variable type when using -Xdebug</li>
</ul>
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</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li>See full diff in <a href="https://github.com/JetBrains/kotlin/commits">compare view</a></li>
</ul>
</details>
<br />

Updates `kotlin-maven-plugin` from 1.8.10 to 1.8.20

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</details>

Fixes #1484

COPYBARA_INTEGRATE_REVIEW=#1484 from google:dependabot/maven/value/kotlin.version-1.8.20 b3d22db
PiperOrigin-RevId: 520792914

value/src/it/functional/pom.xml

@@ -32,7 +32,7 @@
   <version>HEAD-SNAPSHOT</version>
   <name>Auto-Value Functional Integration Test</name>
   <properties>
-    <kotlin.version>1.8.10</kotlin.version>
+    <kotlin.version>1.8.20</kotlin.version>
   </properties>
   <dependencies>
     <dependency>