build(deps): bump pyopenssl from 24.1.0 to 24.2.1 in /requirements

Bumps [pyopenssl](https://github.com/pyca/pyopenssl) from 24.1.0 to 24.2.1.
- [Changelog](https://github.com/pyca/pyopenssl/blob/main/CHANGELOG.rst)
- [Commits](pyca/pyopenssl@24.1.0...24.2.1)

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

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

requirements/requirements-saltbox.txt

@@ -13,7 +13,7 @@ netaddr==1.3.0
 passlib==1.7.4
 pexpect==4.9.0
 PyMySQL==1.1.1
-pyOpenSSL==24.1.0
+pyOpenSSL==24.2.1
 requests==2.32.3
 ruamel.yaml==0.18.6
 tld==0.13