chore(deps): update pre-commit hook davidanson/markdownlint-cli2 to v0.20.0

Author: renovate[bot]

.pre-commit-config.yaml

@@ -65,7 +65,7 @@ repos:
       - id: hadolint-docker
 
   - repo: https://github.com/DavidAnson/markdownlint-cli2
-    rev: v0.19.1
+    rev: v0.20.0
     hooks:
       - id: markdownlint-cli2
         args: [--fix]