Bump actions/setup-java from 4.2.0 to 4.2.1

Bumps [actions/setup-java](https://github.com/actions/setup-java) from 4.2.0 to 4.2.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/actions/setup-java/releases">actions/setup-java's releases</a>.</em></p>
<blockquote>
<h2>v4.2.1</h2>
<h2>What's Changed</h2>
<ul>
<li>Patch for java version file to accept it from any path by <a href="https://github.com/mahabaleshwars"><code>@​mahabaleshwars</code></a> in <a href="https://redirect.github.com/actions/setup-java/pull/610">actions/setup-java#610</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a href="https://github.com/actions/setup-java/compare/v4...v4.2.1">https://github.com/actions/setup-java/compare/v4...v4.2.1</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/actions/setup-java/commit/99b8673ff64fbf99d8d325f52d9a5bdedb8483e9"><code>99b8673</code></a> Patch for java version file (<a href="https://redirect.github.com/actions/setup-java/issues/610">#610</a>)</li>
<li>See full diff in <a href="https://github.com/actions/setup-java/compare/5896cecc08fd8a1fbdfaf517e29b571164b031f7...99b8673ff64fbf99d8d325f52d9a5bdedb8483e9">compare view</a></li>
</ul>
</details>
<br />

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</details>

Fixes #324

COPYBARA_INTEGRATE_REVIEW=#324 from google:dependabot/github_actions/actions/setup-java-4.2.1 9b01567
PiperOrigin-RevId: 616143247

.github/workflows/ci.yml

@@ -40,7 +40,7 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-maven-
       - name: 'Set up JDK ${{ matrix.java }}'
-        uses: actions/setup-java@5896cecc08fd8a1fbdfaf517e29b571164b031f7
+        uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9
         with:
           java-version: ${{ matrix.java }}
           distribution: 'zulu'
@@ -67,7 +67,7 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-maven-
       - name: 'Set up JDK 8'
-        uses: actions/setup-java@5896cecc08fd8a1fbdfaf517e29b571164b031f7
+        uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9
         with:
           java-version: 8
           distribution: 'zulu'
@@ -96,7 +96,7 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-maven-
       - name: 'Set up JDK 11'
-        uses: actions/setup-java@5896cecc08fd8a1fbdfaf517e29b571164b031f7
+        uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9
         with:
           java-version: 11
           distribution: 'zulu'