Update GitHub workflows: remove CompatHelper, add Julia dependabot#8

djukic14 merged 1 commit intoJuliaGraphs:mainJuliaGraphs/GraphsColoring.jl:mainfrom

Krastanov-agent:update-workflows-julia-dependabotKrastanov-agent/GraphsColoring.jl:update-workflows-julia-dependabotCopy head branch name to clipboard