Bump com.google.protobuf:protobuf-java from 4.26.1 to 4.27.0

Bumps [com.google.protobuf:protobuf-java](https://github.com/protocolbuffers/protobuf) from 4.26.1 to 4.27.0.
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Fixes #1296

COPYBARA_INTEGRATE_REVIEW=#1296 from google:dependabot/maven/com.google.protobuf-protobuf-java-4.27.0 20fa1fc
PiperOrigin-RevId: 636911101

pom.xml

@@ -30,7 +30,7 @@
     -->
     <guava.jre.version>33.2.0-jre</guava.jre.version>
     <gwt.version>2.10.0</gwt.version>
-    <protobuf.version>4.26.1</protobuf.version>
+    <protobuf.version>4.27.0</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>