build(deps): bump mkdocs-material from 9.6.20 to 9.6.21 in /hack/mkdocs/image#4143

dependabot[bot] wants to merge 1 commit intomainkubernetes-sigs/gateway-api:mainfrom

dependabot/pip/hack/mkdocs/image/mkdocs-material-9.6.21kubernetes-sigs/gateway-api:dependabot/pip/hack/mkdocs/image/mkdocs-material-9.6.21Copy head branch name to clipboard