vendor: add github.com/tmc/grpc-websocket-proxy

Updating golang.org/x/net as well so that a new dependency
github.com/sirupsen/logrus can be compiled on Windows environments.

bill-of-materials.json

@@ -143,6 +143,15 @@
 			}
 		]
 	},
+	{
+		"project": "github.com/gorilla/websocket",
+		"licenses": [
+			{
+				"type": "BSD 2-clause \"Simplified\" License",
+				"confidence": 0.9852216748768473
+			}
+		]
+	},
 	{
 		"project": "github.com/grpc-ecosystem/go-grpc-prometheus",
 		"licenses": [
@@ -255,6 +264,15 @@
 			}
 		]
 	},
+	{
+		"project": "github.com/sirupsen/logrus",
+		"licenses": [
+			{
+				"type": "MIT License",
+				"confidence": 1
+			}
+		]
+	},
 	{
 		"project": "github.com/soheilhy/cmux",
 		"licenses": [
@@ -282,6 +300,15 @@
 			}
 		]
 	},
+	{
+		"project": "github.com/tmc/grpc-websocket-proxy/wsproxy",
+		"licenses": [
+			{
+				"type": "MIT License",
+				"confidence": 0.9891304347826086
+			}
+		]
+	},
 	{
 		"project": "github.com/ugorji/go/codec",
 		"licenses": [
@@ -327,6 +354,15 @@
 			}
 		]
 	},
+	{
+		"project": "golang.org/x/sys/unix",
+		"licenses": [
+			{
+				"type": "BSD 3-clause \"New\" or \"Revised\" License",
+				"confidence": 0.9663865546218487
+			}
+		]
+	},
 	{
 		"project": "golang.org/x/text",
 		"licenses": [