Bump d3-delaunay from 5.1.6 to 5.2.0
Bump d3-delaunay from 5.1.6 to 5.2.0

Bumps [d3-delaunay](https://github.com/d3/d3-delaunay) from 5.1.6 to 5.2.0.
- [Release notes](https://github.com/d3/d3-delaunay/releases)
- [Commits](https://github.com/d3/d3-delaunay/compare/v5.1.6...v5.2.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
vega/vega,vega/vega,vega/vega,lgrammel/vega,vega/vega