[pre-commit.ci] pre-commit autoupdate (#241)

<!--pre-commit.ci start-->
updates:
- [github.com/astral-sh/uv-pre-commit: 0.9.18 →
0.9.21](astral-sh/uv-pre-commit@0.9.18...0.9.21)
<!--pre-commit.ci end-->

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/astral-sh/uv-pre-commit
-    rev: 0.9.18
+    rev: 0.9.21
     hooks:
       - id: uv-lock
       - id: uv-export