Bump protobuf-java from 2.6.1 to 3.16.3 in /amazon-kinesis-client#4

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dependabot/maven/amazon-kinesis-client/com.google.protobuf-protobuf-java-3.16.3bproenca/aws:dependabot/maven/amazon-kinesis-client/com.google.protobuf-protobuf-java-3.16.3Copy head branch name to clipboard