Update go-plugin dep (#5552)

* mod: remove unnecessary import groupings

Move all imports into one of two groupings:

1. Direct dependencies
2. Indirect dependencies

This is the standard used by the go tool. The old groupings
seemed very random.

* mod: update go-plugin dependency

plugins/kms/mains/gcpckms/go.mod

@@ -21,23 +21,22 @@ require (
 	github.com/googleapis/gax-go/v2 v2.12.0 // indirect
 	github.com/hashicorp/go-hclog v1.5.0 // indirect
 	github.com/hashicorp/go-kms-wrapping/v2 v2.0.16 // indirect
-	github.com/hashicorp/go-plugin v1.5.2 // indirect
+	github.com/hashicorp/go-plugin v1.6.3 // indirect
 	github.com/hashicorp/go-secure-stdlib/base62 v0.1.2 // indirect
 	github.com/hashicorp/go-uuid v1.0.3 // indirect
 	github.com/hashicorp/yamux v0.1.1 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.17 // indirect
-	github.com/mitchellh/go-testing-interface v1.14.1 // indirect
 	github.com/oklog/run v1.1.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/rogpeppe/go-internal v1.8.1 // indirect
 	github.com/stretchr/testify v1.8.4 // indirect
 	go.opencensus.io v0.24.0 // indirect
-	golang.org/x/crypto v0.31.0 // indirect
-	golang.org/x/net v0.33.0 // indirect
+	golang.org/x/crypto v0.32.0 // indirect
+	golang.org/x/net v0.34.0 // indirect
 	golang.org/x/oauth2 v0.13.0 // indirect
 	golang.org/x/sync v0.10.0 // indirect
-	golang.org/x/sys v0.28.0 // indirect
+	golang.org/x/sys v0.29.0 // indirect
 	golang.org/x/text v0.21.0 // indirect
 	google.golang.org/api v0.149.0 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
@@ -45,6 +44,6 @@ require (
 	google.golang.org/genproto/googleapis/api v0.0.0-20231016165738-49dd2c1f3d0b // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20231016165738-49dd2c1f3d0b // indirect
 	google.golang.org/grpc v1.59.0 // indirect
-	google.golang.org/protobuf v1.34.2 // indirect
+	google.golang.org/protobuf v1.36.1 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )