fix: Apply ruff formatting to config.py (#969)

Add required blank line after import statement to satisfy ruff format check.
This fixes the CI failure that was causing the badge to show "no status".

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: abrichr

openadapt/config.py

@@ -166,6 +166,7 @@ def get_device(self) -> str:
 
         try:
             import torch
+
             if torch.cuda.is_available():
                 return "cuda"
             elif hasattr(torch.backends, "mps") and torch.backends.mps.is_available():