🧪💄 Use single-quoted f-string conjur

This was getting formatted @ GHA but not locally for some reason.

src/awx_plugins/credentials/conjur.py

@@ -135,7 +135,7 @@ def conjur_backend(**kwargs):
  url, '/'.join(['api', 'secrets', account, 'variable', secret_path]),
  )
  if version:
- ver = f"version={version}"
+ ver = f'version={version}'
  path = '?'.join([path, ver])
  path_conjurcloud = '?'.join([path_conjurcloud, ver])