fixes

crypto/src/jsMain/kotlin/dev/inmo/micro_utils/crypto/CryptoJs.kt

@@ -8,6 +8,6 @@ external interface CryptoJs {
 @JsNonModule
 external val CryptoJS: CryptoJs
 
-actual fun SourceString.hmacSha256(key: String) = CryptoJS.asDynamic().HmacSHA256(this, key).unsafeCast<String>()
-
-actual fun SourceString.hex() = CryptoJS.asDynamic().format.Hex(this).unsafeCast<String>()
+actual fun SourceString.hmacSha256(key: String): String {
+    return CryptoJS.asDynamic().HmacSHA256(this, key).toString().unsafeCast<String>()
+}