[pre-commit.ci] pre-commit autoupdate (#47)

updates:
- [github.com/asottile/add-trailing-comma.git: v3.0.1 → v3.1.0](https://github.com/asottile/add-trailing-comma.git/compare/v3.0.1...v3.1.0)

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

@@ -1,7 +1,7 @@
 ---
 repos:
 - repo: https://github.com/asottile/add-trailing-comma.git
-  rev: v3.0.1
+  rev: v3.1.0
   hooks:
   - id: add-trailing-comma