Bump mkdocs-material from 9.0.13 to 9.1.6#19

dependabot[bot] wants to merge 1 commit intomastermultixscale/multixscale.github.io:masterfrom

dependabot/pip/mkdocs-material-9.1.6multixscale/multixscale.github.io:dependabot/pip/mkdocs-material-9.1.6Copy head branch name to clipboard