Use ureq with default features

Author: rajarshimaitra

Cargo.toml

@@ -24,7 +24,7 @@ rand = "^0.7"
 sled = { version = "0.34", optional = true }
 electrum-client = { version = "0.8", optional = true }
 reqwest = { version = "0.11", optional = true, features = ["json"] }
-ureq = { version = "2.1", default-features = false, features = ["json"], optional = true }
+ureq = { version = "2.1", features = ["json"], optional = true }
 futures = { version = "0.3", optional = true }
 async-trait = { version = "0.1", optional = true }
 rocksdb = { version = "0.14", default-features = false, features = ["snappy"], optional = true }