Replace go-grpc-prometheus with go-grpc-middleware/providers/prometheus

Fixes #9806

go-grpc-prometheus is deprecated. The new location it was moved to also introduced
an entirely new api, but afaict this matches what we have at the moment.

Signed-off-by: Danny Canter <danny@dcantah.dev>

vendor/github.com/grpc-ecosystem/go-grpc-middleware/v2/interceptors/doc.go

@@ -0,0 +1,12 @@
+// Copyright (c) The go-grpc-middleware Authors.
+// Licensed under the Apache License 2.0.
+
+//
+/*
+interceptor is an internal package used by higher level middlewares. It allows injecting custom code in various
+places of the gRPC lifecycle.
+
+This particular package is intended for use by other middleware, metric, logging or otherwise.
+This allows code to be shared between different implementations.
+*/
+package interceptors