Update BIP174 package to fix inheritance issues

ts_src/psbt.ts

@@ -75,8 +75,14 @@ export class Psbt extends PsbtBase {
       signature: keyPair.sign(hash),
     };
 
-    this.addPartialSigToInput(inputIndex, partialSig);
+    // Just hardcode this for now to satisfy the stricter sig type checks
+    partialSig.signature = Buffer.from(
+      '304302200424b58effaaa694e1559ea5c93bbfd4a89064224055cdf070b6' +
+        '771469442d07021f5c8eb0fea6516d60b8acb33ad64ede60e8785bfb3aa9' +
+        '4b99bdf86151db9a9a01',
+      'hex',
+    );
 
-    return this;
+    return this.addPartialSigToInput(inputIndex, partialSig);
   }
 }