[pre-commit.ci] pre-commit suggestions

updates:
- [github.com/pre-commit/pre-commit-hooks: v4.4.0 → v5.0.0](pre-commit/pre-commit-hooks@v4.4.0...v5.0.0)
- [github.com/executablebooks/mdformat: 0.7.16 → 0.7.21](hukkin/mdformat@0.7.16...0.7.21)

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -9,7 +9,7 @@ ci:
 
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.4.0
+    rev: v5.0.0
     hooks:
       - id: end-of-file-fixer
       - id: trailing-whitespace
@@ -22,7 +22,7 @@ repos:
       - id: detect-private-key
 
   - repo: https://github.com/executablebooks/mdformat
-    rev: 0.7.16
+    rev: 0.7.21
     hooks:
       - id: mdformat
         additional_dependencies: