boltz: use updated boltz with underflow checks

Author: RCasatta

Cargo.lock

@@ -9,7 +9,7 @@ blocking = ["lwk_wollet/electrum"]
 
 [dependencies]
 async-trait = "0.1"
-boltz-client = { git = "https://github.com/RCasatta/boltz-rust/", rev = "ec5b5b5087e7109a12e6eb1523c6678445d323fa", features = [
+boltz-client = { git = "https://github.com/RCasatta/boltz-rust/", rev = "97b73ad07b7362dbdde3d4747aa66ba019278c54", features = [
     "ws",
     "electrum",
 ] }

lwk_boltz/Cargo.toml

@@ -275,7 +275,7 @@ impl BoltzSession {
     /// Returns a preimage from the keys or a random one according to flag `self.random_preimage`
     pub(crate) fn preimage(&self, our_keys: &Keypair) -> Preimage {
         if self.random_preimages {
-            Preimage::new()
+            Preimage::random()
         } else {
             preimage_from_keypair(our_keys)
         }

lwk_boltz/src/lib.rs

@@ -67,7 +67,7 @@ mod tests {
         let _ = env_logger::try_init();
 
         let secp = Secp256k1::new();
-        let preimage = Preimage::new();
+        let preimage = Preimage::random();
         log::info!("{preimage:#?}");
         let our_claim_keys = Keypair::new(&secp, &mut thread_rng());
         let claim_public_key = PublicKey {

lwk_boltz/tests/chain_swaps.rs

@@ -408,7 +408,7 @@ mod tests {
     /// Test the reverse swap, copied from the boltz_client tests
     async fn v2_reverse(chain_client: &ChainClient, chain: Chain, cooperative: bool) {
         let secp = Secp256k1::new();
-        let preimage = Preimage::new();
+        let preimage = Preimage::random();
         let our_keys = Keypair::new(&secp, &mut thread_rng());
         let invoice_amount = 100000;
         let claim_public_key = PublicKey {