ci: upgrade to GitHub-native Dependabot (#677)
ci: upgrade to GitHub-native Dependabot (#677)

Co-authored-by: dependabot-preview[bot] <6a4c1c4838f800d1998274cd5234e1f65c55e90c@users.noreply.github.com>
Co-authored-by: Dominik Moritz <addeb72ed7b7df5f4ba2327b9379e72239c27bb5@gmail.com>
vega/vega-embed,vega/vega-embed,vega/vega-embed,vega/vega-embed