fix: enable self signed jwt for grpc (#18)
fix: enable self signed jwt for grpc (#18)

PiperOrigin-RevId: 386504689

Source-Link: https://github.com/googleapis/googleapis/commit/762094a99ac6e03a17516b13dfbef37927267a70

Source-Link: https://github.com/googleapis/googleapis-gen/commit/6bfc480e1a161d5de121c2bcc3745885d33b265a
googleapis/python-iam-logging,googleapis/python-iam-logging