Bump protobuf-java from 3.19.2 to 3.19.3

Bumps [protobuf-java](https://github.com/protocolbuffers/protobuf) from 3.19.2 to 3.19.3.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/protocolbuffers/protobuf/releases">protobuf-java's releases</a>.</em></p>
<blockquote>
<h2>Protocol Buffers v3.19.3</h2>
<h1>Python</h1>
<ul>
<li>Fix missing Windows wheel for Python 3.10 on PyPI</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/protocolbuffers/protobuf/commit/cc7b1b53234cd7a8f50d90ac3933b240dcf4cd97"><code>cc7b1b5</code></a> Update protobuf version</li>
<li><a href="https://github.com/protocolbuffers/protobuf/commit/ee432e55b808a57e44115178e41cd5ceae91b205"><code>ee432e5</code></a> Update CHANGES.txt for 3.19.3</li>
<li><a href="https://github.com/protocolbuffers/protobuf/commit/203c593b9681d98e7e05f3d8f862aa183f5d9c91"><code>203c593</code></a> Fix build error with Python 3.10 build on Windows</li>
<li><a href="https://github.com/protocolbuffers/protobuf/commit/922a7ec18926aa2612d14a2b4abb8689477e97a4"><code>922a7ec</code></a> Fix Python 3.10 C++ tests (<a href="https://github-redirect.dependabot.com/protocolbuffers/protobuf/issues/9128">#9128</a>)</li>
<li>See full diff in <a href="https://github.com/protocolbuffers/protobuf/compare/v3.19.2...v3.19.3">compare view</a></li>
</ul>
</details>
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Fixes google#939

COPYBARA_INTEGRATE_REVIEW=google#939 from google:dependabot/maven/com.google.protobuf-protobuf-java-3.19.3 01831fd
PiperOrigin-RevId: 421319642

pom.xml

@@ -39,7 +39,7 @@
  -->
  <guava.jre.version>31.0.1-jre</guava.jre.version>
  <gwt.version>2.9.0</gwt.version>
- <protobuf.version>3.19.2</protobuf.version>
+ <protobuf.version>3.19.3</protobuf.version>
  <!-- Property for protobuf-lite protocArtifact, which isn't a "normal" Maven dep. -->
  <!-- TODO(cpovirk): Use protobuf.version instead. But that requires finding the new way to request the Lite runtime. -->
  <protobuf-lite.protoc.version>3.1.0</protobuf-lite.protoc.version>