Fix linting.

src/holt59/aoc/2023/day19.py

@@ -114,11 +114,12 @@ for workflow_s in workflows_s.split("\n"):
     for block in block_s[:-1].split(","):
         check: Check
         if (i := block.find(":")) >= 0:
-            check, target = (
+            check = (
                 cast(Category, block[0]),
                 cast(Literal["<", ">"], block[1]),
                 int(block[2:i]),
-            ), block[i + 1 :]
+            )
+            target = block[i + 1 :]
         else:
             check, target = None, block
         workflows[name].append((check, target))