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

vendor/github.com/bytedance/sonic/internal/rt/base64_compat.go

@@ -0,0 +1,37 @@
+// +build !amd64 !go1.17 go1.27
+
+package rt
+
+import (
+	"encoding/base64"
+)
+
+func DecodeBase64(raw []byte) ([]byte, error) {
+	ret := make([]byte, base64.StdEncoding.DecodedLen(len(raw)))
+	n, err := base64.StdEncoding.Decode(ret, raw)
+	if err != nil {
+		return nil, err
+	}
+	return ret[:n], nil
+}
+
+func EncodeBase64ToString(src []byte) string {
+    return base64.StdEncoding.EncodeToString(src)
+}
+
+func EncodeBase64(buf []byte, src []byte) []byte {
+	if len(src) == 0 {
+		return append(buf, '"', '"')
+	}
+	buf = append(buf, '"')
+	need := base64.StdEncoding.EncodedLen(len(src))
+	if cap(buf) - len(buf) < need {
+		tmp := make([]byte, len(buf), len(buf) + need*2)
+		copy(tmp, buf)
+		buf = tmp
+	}
+	base64.StdEncoding.Encode(buf[len(buf):cap(buf)], src)
+	buf = buf[:len(buf) + need]
+	buf = append(buf, '"')
+	return buf
+}