Regenerate clients with updated copyright year#4382

JesseLovelace merged 26 commits intogoogleapis:mastergoogleapis/google-cloud-java:masterfrom

chingor13:pr-merge-4354-4355-4356-4357-4358-4360-4361-4362-4363-4364-4365-4366-4367-4368-4369-4370-4371-4372-4373-4374-4375-4376-4377-4378-4379-4380chingor13/google-cloud-java:pr-merge-4354-4355-4356-4357-4358-4360-4361-4362-4363-4364-4365-4366-4367-4368-4369-4370-4371-4372-4373-4374-4375-4376-4377-4378-4379-4380Copy head branch name to clipboard