Cleanup with ruff check (#963)

* Implement improvements suggested by ruff check.

* Add ruff check to CI.

* Add changelog fragment.

plugins/module_utils/_crypto/module_backends/certificate_ownca.py

@@ -45,9 +45,6 @@ if t.TYPE_CHECKING:
     import datetime  # pragma: no cover
 
     from ansible.module_utils.basic import AnsibleModule  # pragma: no cover
-    from cryptography.hazmat.primitives.asymmetric.types import (  # pragma: no cover
-        CertificateIssuerPrivateKeyTypes,
-    )
 
     from ansible_collections.community.crypto.plugins.module_utils._argspec import (  # pragma: no cover
         ArgumentSpec,