fix: Update mypy type ignore comment for compatibility

- Change type: ignore[return-value] to type: ignore[no-any-return]
- Ensures mypy type checking passes in CI/CD pipeline

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/deltaglider/adapters/storage_s3.py

@@ -163,7 +163,7 @@ class S3StorageAdapter(StoragePort):
 
         try:
             response = self.client.get_object(Bucket=bucket, Key=object_key)
-            return response["Body"]  # type: ignore[return-value]
+            return response["Body"]  # type: ignore[no-any-return]
         except ClientError as e:
             if e.response["Error"]["Code"] == "NoSuchKey":
                 raise FileNotFoundError(f"Object not found: {key}") from e