Bump maven-compiler-plugin from 3.8.1 to 3.9.0
Bump maven-compiler-plugin from 3.8.1 to 3.9.0

Bumps [maven-compiler-plugin](https://github.com/apache/maven-compiler-plugin) from 3.8.1 to 3.9.0.
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/apache/maven-compiler-plugin/commit/aeb15b6cf38ee44391febf23310a4f2b432ab444"><code>aeb15b6</code></a> [maven-release-plugin] prepare release maven-compiler-plugin-3.9.0</li>
<li><a href="https://github.com/apache/maven-compiler-plugin/commit/6335382f97aad2e69b9f9a0a4af3cf801cd29273"><code>6335382</code></a> Shared GitHub Acton v2</li>
<li><a href="https://github.com/apache/maven-compiler-plugin/commit/8d5d3cd68db3cefb947e1e1bf5fd83ac231ef00d"><code>8d5d3cd</code></a> Fix site build</li>
<li><a href="https://github.com/apache/maven-compiler-plugin/commit/ce4eb1e353d176f8573f7a3ba893fc3ec42ec21b"><code>ce4eb1e</code></a> Bump plexus-component-metadata from 2.1.0 to 2.1.1</li>
<li><a href="https://github.com/apache/maven-compiler-plugin/commit/f875750ee9bcf07bb25b470c5ceb73d7dccfbe12"><code>f875750</code></a> Bump mockito-core from 4.1.0 to 4.2.0</li>
<li><a href="https://github.com/apache/maven-compiler-plugin/commit/5463357ebc1c65a4e25bfd8ea4c453a618b66bf1"><code>5463357</code></a> fix CI site goal</li>
<li><a href="https://github.com/apache/maven-compiler-plugin/commit/859c9039e4b73367a0d9486cc63b98ec1cc1fa6f"><code>859c903</code></a> Update plugins</li>
<li><a href="https://github.com/apache/maven-compiler-plugin/commit/b0de9bc0fbe9416e81b6a13cb9e67fdf891192af"><code>b0de9bc</code></a> Bump mockito-core from 4.0.0 to 4.1.0</li>
<li><a href="https://github.com/apache/maven-compiler-plugin/commit/f95dd463d904276564ac47ee822c37ac8751f4e9"><code>f95dd46</code></a> Bump plexusCompilerVersion from 2.8.8 to 2.9.0</li>
<li><a href="https://github.com/apache/maven-compiler-plugin/commit/26900cfe598981a516b66e01843e79f1c486a147"><code>26900cf</code></a> Bump mockito-core from 2.28.2 to 4.0.0</li>
<li>Additional commits viewable in <a href="https://github.com/apache/maven-compiler-plugin/compare/maven-compiler-plugin-3.8.1...maven-compiler-plugin-3.9.0">compare view</a></li>
</ul>
</details>
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</details>

Fixes #294

COPYBARA_INTEGRATE_REVIEW=https://github.com/google/compile-testing/pull/294 from google:dependabot/maven/org.apache.maven.plugins-maven-compiler-plugin-3.9.0 b4de7b8a2e3465ccabddea0b231b0b6ccea8e412
PiperOrigin-RevId: 421571861

google/compile-testing