Bump test262 from 926b096 to d7c0a20

Bumps [test262](https://github.com/tc39/test262) from `926b096` to `d7c0a20`.
- [Release notes](https://github.com/tc39/test262/releases)
- [Commits](tc39/test262@926b096...d7c0a20)

---
updated-dependencies:
- dependency-name: test262
  dependency-type: direct:production
...

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