fix: using sha256 for the public key fingerprint

pwnagotchi/mesh/__init__.py

@@ -11,4 +11,4 @@ def get_identity(config):
     pubkey = None
     with open(config['main']['pubkey']) as fp:
         pubkey = RSA.importKey(fp.read())
-    return pubkey, hashlib.sha1(pubkey.exportKey('DER')).hexdigest()
+    return pubkey, hashlib.sha256(pubkey.exportKey('DER')).hexdigest()