TUN-8052: Update go to 1.21.5

Also update golang.org/x/net and google.golang.org/grpc to fix vulnerabilities,
although cloudflared is using them in a way that is not exposed to those risks

tracing/client_test.go

@@ -132,8 +132,7 @@ func createResourceSpan(spans []*tracepb.Span) *tracepb.ResourceSpans {
 				SchemaUrl: instrumentSchemaUrl,
 			},
 		},
-		InstrumentationLibrarySpans: nil,
-		SchemaUrl:                   resourceSchemaUrl,
+		SchemaUrl: resourceSchemaUrl,
 	}
 }