Bump pymdown-extensions from 10.9 to 10.16.1#4

dependabot[bot] wants to merge 1 commit intomainRaspberryPiFoundation/picamzero:mainfrom

dependabot/pip/pymdown-extensions-10.16.1RaspberryPiFoundation/picamzero:dependabot/pip/pymdown-extensions-10.16.1Copy head branch name to clipboard