[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.8.1 → v0.8.6](astral-sh/ruff-pre-commit@v0.8.1...v0.8.6)
- [github.com/executablebooks/mdformat: 0.7.19 → 0.7.21](hukkin/mdformat@0.7.19...0.7.21)

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -26,15 +26,15 @@ repos:
         additional_dependencies: ["tomli"]
   - repo: https://github.com/astral-sh/ruff-pre-commit
     # Ruff version.
-    rev: v0.8.1
+    rev: v0.8.6
     hooks:
       # Run the linter.
       - id: ruff
         args: [ --fix ]
       # Run the formatter.
       - id: ruff-format
   - repo: https://github.com/executablebooks/mdformat
-    rev: 0.7.19
+    rev: 0.7.21
     hooks:
     - id: mdformat
       args: ["--wrap=80"]