fix(nix): update vendorHash and vendor dir for new deps

vendor/github.com/refraction-networking/utls/internal/hkdf/hkdf.go

@@ -0,0 +1,24 @@
+package hkdf
+
+import (
+	"crypto/hkdf"
+	"hash"
+)
+
+func Extract[H hash.Hash](h func() H, secret, salt []byte) []byte {
+	res, err := hkdf.Extract(h, secret, salt)
+	if err != nil {
+		panic(err)
+	}
+
+	return res
+}
+
+func Expand[H hash.Hash](h func() H, pseudorandomKey []byte, info string, keyLength int) []byte {
+	res, err := hkdf.Expand(h, pseudorandomKey, info, keyLength)
+	if err != nil {
+		panic(err)
+	}
+
+	return res
+}