[pre-commit.ci] pre-commit autoupdate (#187)

updates:
- [github.com/asottile/blacken-docs: 1.19.1 → 1.20.0](adamchainz/blacken-docs@1.19.1...1.20.0)

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

@@ -8,7 +8,7 @@ repos:
     hooks:
       - id: reorder-python-imports
   - repo: https://github.com/asottile/blacken-docs
-    rev: 1.19.1
+    rev: 1.20.0
     hooks:
       - id: blacken-docs
         additional_dependencies: [black==22.10.0]