feat(rules): implement `flake8-bandit` `S507` (`ssh_no_host_key_verification`) (#7528)
Part of #1646.
## Summary
Implement `S507`
([`ssh_no_host_key_verification`](https://bandit.readthedocs.io/en/latest/plugins/b507_ssh_no_host_key_verification.html))
rule from `bandit`.
## Test Plan
Snapshot test from
https://github.com/PyCQA/bandit/blob/1.7.5/examples/no_host_key_verification.py,
with several additions to test for more cases (most notably passing the
parameter as a named argument).