build(deps): bump x25519-dalek from 2.0.0 to 2.0.1

Bumps [x25519-dalek](https://github.com/dalek-cryptography/curve25519-dalek) from 2.0.0 to 2.0.1.
- [Release notes](https://github.com/dalek-cryptography/curve25519-dalek/releases)
- [Commits](dalek-cryptography/curve25519-dalek@2.0.0...x25519-2.0.1)

---
updated-dependencies:
- dependency-name: x25519-dalek
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>