[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/DavidAnson/markdownlint-cli2: v0.11.0 → v0.12.1](DavidAnson/markdownlint-cli2@v0.11.0...v0.12.1)

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -33,6 +33,6 @@ repos:
         id: black
         args: ["--line-length", "79"]
   - repo: https://github.com/DavidAnson/markdownlint-cli2
-    rev: v0.11.0
+    rev: v0.12.1
     hooks:
       - id: markdownlint-cli2