Bump whatwg-fetch from 3.6.2 to 3.6.19

Bumps [whatwg-fetch](https://github.com/github/fetch) from 3.6.2 to 3.6.19.
- [Release notes](https://github.com/github/fetch/releases)
- [Changelog](https://github.com/JakeChampion/fetch/blob/main/CHANGELOG.md)
- [Commits](JakeChampion/fetch@v3.6.2...v3.6.19)

---
updated-dependencies:
- dependency-name: whatwg-fetch
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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