Update grpc-go plugin dependency to 1.62.0 (#1325)

The protoc-gen-grpc-go plugin updated in v1.4.0 to require at least
grpc-go v1.62.0 of generated code. Update to v1.62.2 to require the
latest security release of grpc-go.

Additionally, bump the version of the protocolbuffers/go dependency.

plugins/grpc/go/v1.4.0/buf.plugin.yaml

@@ -7,12 +7,13 @@ description: Generates Go client and server stubs for the gRPC framework.
 output_languages:
  - go
 deps:
- - plugin: buf.build/protocolbuffers/go:v1.34.1
+ - plugin: buf.build/protocolbuffers/go:v1.34.2
 registry:
  go:
+ min_version: "1.19"
  deps:
  - module: google.golang.org/grpc
- version: v1.61.2
+ version: v1.62.2
  opts:
  - paths=source_relative
  - require_unimplemented_servers=false