build: lock dependencies and upgrade pymdown-extension which was causing the error#84

stevenhsd merged 1 commit intomainNHSDigital/data-validation-engine:mainfrom

build/gr-fix_issues_with_dependencies_causing_build_to_failNHSDigital/data-validation-engine:build/gr-fix_issues_with_dependencies_causing_build_to_failCopy head branch name to clipboard