pre-commit: bump repositories (#828)

* pre-commit: bump repositories

updates:
- [github.com/asottile/blacken-docs: 1.18.0 → 1.19.0](adamchainz/blacken-docs@1.18.0...1.19.0)

* Update .pre-commit-config.yaml

---------

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

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -20,8 +20,8 @@ repos:
     rev: v0.20.2
     hooks:
       - id: validate-pyproject
-  - repo: https://github.com/asottile/blacken-docs
-    rev: 1.18.0
+  - repo: https://github.com/adamchainz/blacken-docs
+    rev: 1.19.0
     hooks:
       - id: blacken-docs
         additional_dependencies: [black==23.*]