Bump @typespec/rest from 0.74.0 to 0.75.0 in /additions (#901)

Bumps [@typespec/rest](https://github.com/microsoft/typespec) from 0.74.0 to 0.75.0.
- [Release notes](https://github.com/microsoft/typespec/releases)
- [Commits](https://github.com/microsoft/typespec/compare/@typespec/[email protected]...@typespec/[email protected])

---
updated-dependencies:
- dependency-name: "@typespec/rest"
  dependency-version: 0.75.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]