fix(deps): do not depend on protobufjs (#968)
fix(deps): do not depend on protobufjs (#968)

* fix(deps): update dependency protobufjs to v7

* fix(deps): do not depend on protobufjs

Co-authored-by: Alexander Fenster <6478fa08e27a96b3fd9dd70550141c2ad89ec221@google.com>
googleapis/nodejs-dialogflow,googleapis/nodejs-dialogflow