Bump d3-color and @swimlane/ngx-charts

Bumps [d3-color](https://github.com/d3/d3-color) to 3.1.0 and updates ancestor dependency [@swimlane/ngx-charts](https://github.com/swimlane/ngx-charts). These dependencies need to be updated together.


Updates `d3-color` from 2.0.0 to 3.1.0
- [Release notes](https://github.com/d3/d3-color/releases)
- [Commits](d3/d3-color@v2.0.0...v3.1.0)

Updates `@swimlane/ngx-charts` from 20.1.2 to 20.5.0
- [Changelog](https://github.com/swimlane/ngx-charts/blob/master/docs/changelog.md)
- [Commits](swimlane/ngx-charts@20.1.2...20.5.0)

---
updated-dependencies:
- dependency-name: d3-color
  dependency-type: indirect
- dependency-name: "@swimlane/ngx-charts"
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>