Bump mkdocs-material from 9.6.20 to 9.6.21#194

MatthewCane merged 1 commit intomainMatthewCane/python-ntfy:mainfrom

dependabot/uv/mkdocs-material-9.6.21MatthewCane/python-ntfy:dependabot/uv/mkdocs-material-9.6.21Copy head branch name to clipboard