Adjust format for 3.9

Author: dgarros

infrahub_sdk/testing/repository.py

@@ -65,7 +65,7 @@ def init(self) -> None:
 
         self.repo.git.checkout(self.initial_branch)
 
-    async def add_to_infrahub(self, client: InfrahubClient, branch: str | None = None) -> dict:
+    async def add_to_infrahub(self, client: InfrahubClient, branch: Optional[str] = None) -> dict:
         input_data = {
             "data": {
                 "name": {"value": self.name},
@@ -84,7 +84,7 @@ async def add_to_infrahub(self, client: InfrahubClient, branch: str | None = Non
         )
 
     async def wait_for_sync_to_complete(
-        self, client: InfrahubClient, branch: str | None = None, interval: int = 5, retries: int = 6
+        self, client: InfrahubClient, branch: Optional[str] = None, interval: int = 5, retries: int = 6
     ) -> bool:
         for _ in range(retries):
             repo = await client.get(