[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.14.10 → v0.15.4](astral-sh/ruff-pre-commit@v0.14.10...v0.15.4)
- [github.com/DavidAnson/markdownlint-cli2: v0.20.0 → v0.21.0](DavidAnson/markdownlint-cli2@v0.20.0...v0.21.0)

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -4,7 +4,7 @@ ci:
 repos:
 - repo: https://github.com/astral-sh/ruff-pre-commit
   # Ruff version.
-  rev: v0.14.10
+  rev: v0.15.4
   hooks:
     # Run the linter.
     - id: ruff
@@ -33,7 +33,7 @@ repos:
         ".codespellignore",
       ]
 - repo: https://github.com/DavidAnson/markdownlint-cli2  # For formatting markdown for documentation
-  rev: v0.20.0
+  rev: v0.21.0
   hooks:
     - id: markdownlint-cli2
       args: [