update noble secp256k1 and ensure we always return hex.

event.js

@@ -52,7 +52,7 @@ export function verifySignature(event) {
 }
 
 export async function signEvent(event, key) {
-  return Buffer.from(secp256k1.schnorr.sign(getEventHash(event), key)).toString(
+  return Buffer.from(
-    'hex'
+    await secp256k1.schnorr.sign(getEventHash(event), key)
-  )
+  ).toString('hex')
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "nostr-tools",
-  "version": "0.22.0",
+  "version": "0.22.1",
   "description": "Tools for making a Nostr client.",
   "repository": {
     "type": "git",