v2.4.1 @google-cloud/opentelemetry-cloud-trace-exporter

This is a patch release for only @google-cloud/opentelemetry-cloud-trace-exporter to fix #768

What's Changed

• fix(trace-exporter): include protos.json in the npm pack tarball by @aabmass in #769

Full Changelog: https://github.com/GoogleCloudPlatform/opentelemetry-operations-js/compare/v2.4.0/v0.20.0...@google-cloud/[email protected]