build(deps): bump pynacl from 1.4.0 to 1.5.0
build(deps): bump pynacl from 1.4.0 to 1.5.0

Bumps [pynacl](https://github.com/pyca/pynacl) from 1.4.0 to 1.5.0.
- [Release notes](https://github.com/pyca/pynacl/releases)
- [Changelog](https://github.com/pyca/pynacl/blob/main/CHANGELOG.rst)
- [Commits](https://github.com/pyca/pynacl/compare/1.4.0...1.5.0)

---
updated-dependencies:
- dependency-name: pynacl
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
secure-systems-lab/securesystemslib,secure-systems-lab/securesystemslib