fix: fix end of files for pre-commit (#1387)

# What does this PR do?

Fix end of files hook for pre-commit.

[//]: # (If resolving an issue, uncomment and update the line below)
[//]: # (Closes #[issue-number])

## Test Plan

Run pre-commit without any errors:

```
uv run pre-commit run --all-files
```

Signed-off-by: Sébastien Han <seb@redhat.com>

tests/api/fixtures/recorded_responses/chat_completion.json

@@ -10630,4 +10630,4 @@
     ],
     "type": "generator"
   }
-}
+}

tests/api/fixtures/recorded_responses/invoke_tool.json

@@ -290,4 +290,4 @@
       "metadata": null
     }
   }
-}
+}