chore(deps): update dependency markdownlint-cli2 to v0.18.0 (#444)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.tool-versions

@@ -3,7 +3,7 @@ golang 1.23.8
 golangci-lint 1.64.8
 goreleaser 2.9.0
 hadolint 2.12.0
-markdownlint-cli2 0.17.2
+markdownlint-cli2 0.18.0
 shellcheck 0.10.0
 shfmt 3.11.0
 yamllint 1.37.1