Bump keypair from 1.0.1 to 1.0.4

Bumps [keypair](https://github.com/juliangruber/keypair) from 1.0.1 to 1.0.4.
- [Release notes](https://github.com/juliangruber/keypair/releases)
- [Commits](juliangruber/keypair@v1.0.1...v1.0.4)

---
updated-dependencies:
- dependency-name: keypair
  dependency-type: indirect
...

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