Update grpc-go dependency to allow writing plugins in nodejs / rust over UDS

[entropitor]

Due to a bug in grpc-go (grpc/grpc-go#2628), it's impossible to write a grpc server over Unix domain sockets (UDS) with go as a client because it sets the :authority header value to an unsupported value according to the HTTP2 spec, this should be fixed now and supported in an upcoming release

[callensm]

I'm also trying to write a plugin in Rust but getting:

Error enabling: Error making API request.

URL: POST http://localhost:8200/v1/sys/mounts/test-plugin
Code: 400. Errors:

* rpc error: code = Unknown desc = OK: HTTP status code 200; transport: missing content-type field

every time I run vault secrets enable test-plugin

[entropitor]

Would this be a hard dependency to bump @mitchellh? Because the longer it takes to bump here, the longer it takes to bump in the different HashiCorp applications, the less versions of those applications plugins in different languages will be able to support.

[tomhjp]

Sorry this went unanswered for so long, it looks like d61bc34 addressed this by bumping from v1.27.1 -> v1.38.0, and AFAICT the fix was first released in v1.31? Feel free to reopen if it's not resolved though. Thanks for raising the issue!