Bump protobuf-java from 2.4.0a to 3.16.3 in /tools/java/cpp-build#3

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dependabot/maven/tools/java/cpp-build/com.google.protobuf-protobuf-java-3.16.3jaybobo/libphonenumber:dependabot/maven/tools/java/cpp-build/com.google.protobuf-protobuf-java-3.16.3Copy head branch name to clipboard