Bump d3-color and d3 in /src/api

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


Updates `d3-color` from 1.4.1 to 3.1.0
- [Release notes](https://github.com/d3/d3-color/releases)
- [Commits](d3/d3-color@v1.4.1...v3.1.0)

Updates `d3` from 5.16.0 to 7.6.1
- [Release notes](https://github.com/d3/d3/releases)
- [Changelog](https://github.com/d3/d3/blob/main/CHANGES.md)
- [Commits](d3/d3@v5.16.0...v7.6.1)

---
updated-dependencies:
- dependency-name: d3-color
  dependency-type: indirect
- dependency-name: d3
  dependency-type: direct:production
...

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Author: dependabot[bot]