chore(deps): Bump @rdfjs/fetch and @types/rdfjs__fetch

Bumps [@rdfjs/fetch](https://github.com/rdfjs-base/fetch) and [@types/rdfjs__fetch](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/rdfjs__fetch). These dependencies needed to be updated together.

Updates `@rdfjs/fetch` from 2.1.0 to 3.1.1
- [Commits](rdfjs-base/fetch@v2.1.0...v3.1.1)

Updates `@types/rdfjs__fetch` from 2.0.3 to 3.0.7
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/rdfjs__fetch)

---
updated-dependencies:
- dependency-name: "@rdfjs/fetch"
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: "@types/rdfjs__fetch"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]