Update vendor

vendor/github.com/valyala/fasthttp/nocopy.go

@@ -0,0 +1,9 @@
+package fasthttp
+
+// Embed this type into a struct, which mustn't be copied,
+// so `go vet` gives a warning if this struct is copied.
+//
+// See https://github.com/golang/go/issues/8005#issuecomment-190753527 for details.
+type noCopy struct{}
+
+func (*noCopy) Lock() {}