chore: bumped curve25519 (matter-labs#2299)

## What ❔

matter-labs#2274 got reverted

## Why ❔

Vuln

## Checklist

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- [ ] PR title corresponds to the body of PR (we generate changelog
entries from PRs).
- [ ] Tests for the changes have been added / updated.
- [ ] Documentation comments have been added / updated.
- [ ] Code has been formatted via `zk fmt` and `zk lint`.