correct env variable name

.gitea/workflows/notifications.yml

@@ -41,7 +41,7 @@ jobs:
           current_run_number = int("${{ gitea.run_number }}")
           current_branch = "${{ gitea.ref_name }}"
           current_event = "${{ gitea.event_name }}"
-          token = os.environ["GITEA_TOKEN"]
+          token = os.environ["API_GITEA_TOKEN"]
 
           url = (
               f"{server}/api/v1/repos/{repo}/actions/runs"