Chore(deps): Bump pynacl from 1.5 to 1.6.0

Bumps [pynacl](https://github.com/pyca/pynacl) from 1.5 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]

pyproject.toml

@@ -40,7 +40,7 @@ dependencies = [
   "jwcrypto==1.5.6",
   "pydantic>=2,<3",
   "pydantic-settings>=2",
-  "pynacl==1.5",                           # Needed now as default with _load_account changement
+  "pynacl==1.6.0",                           # Needed now as default with _load_account changement
   "python-magic",
   "typing-extensions",
   "web3>=7.10",