Update dependencies

vendor/github.com/coder/websocket/internal/util/util.go

@@ -0,0 +1,15 @@
+package util
+
+// WriterFunc is used to implement one off io.Writers.
+type WriterFunc func(p []byte) (int, error)
+
+func (f WriterFunc) Write(p []byte) (int, error) {
+	return f(p)
+}
+
+// ReaderFunc is used to implement one off io.Readers.
+type ReaderFunc func(p []byte) (int, error)
+
+func (f ReaderFunc) Read(p []byte) (int, error) {
+	return f(p)
+}