chore(deps): bump ic-crypto-ed25519 from 7927c34 to 8869fff

Bumps [ic-crypto-ed25519](https://github.com/dfinity/ic) from `7927c34` to `8869fff`.
- [Release notes](https://github.com/dfinity/ic/releases)
- [Commits](dfinity/ic@7927c34...8869fff)

---
updated-dependencies:
- dependency-name: ic-crypto-ed25519
  dependency-type: direct:production
...

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