Bump the dependencies group with 4 updates

Bumps the dependencies group with 4 updates: [com.google.errorprone:error_prone_annotations](https://github.com/google/error-prone), [com.google.protobuf:protobuf-java](https://github.com/protocolbuffers/protobuf), [org.apache.maven.plugins:maven-site-plugin](https://github.com/apache/maven-site-plugin) and [org.apache.maven.plugins:maven-project-info-reports-plugin](https://github.com/apache/maven-project-info-reports-plugin).


Updates `com.google.errorprone:error_prone_annotations` from 2.34.0 to 2.35.1
- [Release notes](https://github.com/google/error-prone/releases)
- [Commits](google/error-prone@v2.34.0...v2.35.1)

Updates `com.google.protobuf:protobuf-java` from 4.28.2 to 4.28.3
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](https://github.com/protocolbuffers/protobuf/commits)

Updates `org.apache.maven.plugins:maven-site-plugin` from 3.20.0 to 3.21.0
- [Release notes](https://github.com/apache/maven-site-plugin/releases)
- [Commits](apache/maven-site-plugin@maven-site-plugin-3.20.0...maven-site-plugin-3.21.0)

Updates `org.apache.maven.plugins:maven-project-info-reports-plugin` from 3.7.0 to 3.8.0
- [Commits](apache/maven-project-info-reports-plugin@maven-project-info-reports-plugin-3.7.0...maven-project-info-reports-plugin-3.8.0)

---
updated-dependencies:
- dependency-name: com.google.errorprone:error_prone_annotations
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dependencies
- dependency-name: com.google.protobuf:protobuf-java
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dependencies
- dependency-name: org.apache.maven.plugins:maven-site-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dependencies
- dependency-name: org.apache.maven.plugins:maven-project-info-reports-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dependencies
...

Signed-off-by: dependabot[bot] <support@github.com>

core/pom.xml

@@ -227,7 +227,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-project-info-reports-plugin</artifactId>
-        <version>3.7.0</version>
+        <version>3.8.0</version>
       </plugin>
     </plugins>
   </reporting>

pom.xml

@@ -30,7 +30,7 @@
     -->
     <guava.jre.version>33.3.1-jre</guava.jre.version>
     <gwt.version>2.10.0</gwt.version>
-    <protobuf.version>4.28.2</protobuf.version>
+    <protobuf.version>4.28.3</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>
@@ -103,7 +103,7 @@
       <dependency>
         <groupId>com.google.errorprone</groupId>
         <artifactId>error_prone_annotations</artifactId>
-        <version>2.34.0</version>
+        <version>2.35.1</version>
       </dependency>
       <dependency>
         <groupId>com.google.protobuf</groupId>
@@ -219,12 +219,12 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-site-plugin</artifactId>
-          <version>3.20.0</version>
+          <version>3.21.0</version>
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-project-info-reports-plugin</artifactId>
-          <version>3.7.0</version>
+          <version>3.8.0</version>
         </plugin>
         <plugin>
           <artifactId>maven-javadoc-plugin</artifactId>