ci(dependabot-pip): bump pynacl from 1.5.0 to 1.6.0

Bumps [pynacl](https://github.com/pyca/pynacl) from 1.5.0 to 1.6.0.
- [Changelog](https://github.com/pyca/pynacl/blob/main/CHANGELOG.rst)
- [Commits](pyca/pynacl@1.5.0...1.6.0)

---
updated-dependencies:
- dependency-name: pynacl
  dependency-version: 1.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -34,7 +34,7 @@ pygithub==2.2.0
     # via sync-jira-actions (pyproject.toml)
 pyjwt==2.8.0
     # via pygithub
-pynacl==1.5.0
+pynacl==1.6.0
     # via pygithub
 requests==2.31.0
     # via