Merge pull request 'fix: API request model fix' (#20) from bugfix/webhook into master

Reviewed-on: https://hattori.ztsh.eu/iac/karl/pulls/20

src/karl/api/models.py

@@ -4,10 +4,11 @@ from typing import List
 
 @dataclass
 class Request:
-  _id: str
+  _id: int
   commit: str
+  ref: str
   message: str
-  started: str
+  started: int
   files: List[str]