fix(github): Minor errors in handling of secrets.

Author: BURG3R5

bot/github/authenticator.py

@@ -69,7 +69,7 @@ def exchange_code_for_token(self, code: str) -> str:
         return response.json()["access_token"]
 
     def use_token_for_webhooks(self, token: str, repository: str):
-        secret = db.token_hex(20)
+        secret = secrets.token_hex(20)
 
         successful = self.storage.add_secret(repository, secret)
 

bot/github/parser.py

@@ -90,7 +90,7 @@ def verify(self, request: LocalRequest) -> tuple[bool, str]:
 
         expected_digest = headers["X-Hub-Signature-256"].split('=', 1)[-1]
         digest = hmac.new(
-            secret,
+            secret.encode(),
             request.body.getvalue(),
             hashlib.sha256,
         ).hexdigest()