chg: test: Rewrite cipher-suites system test to pytest

The minimal dnspython version that has the "verify" argument for dns.query.tls() is 2.5.0. Locally, tested on Fedora 39 (non-FIPS) and OL9 (FIPS) with dnspython 2.5.0.

Without dnspython 2.5.0+, pylint and mypy jobs fail:

bin/tests/system/isctest/query.py:55: error: Unexpected keyword argument "verify" for "tls"  [call-arg]
/usr/lib/python3/dist-packages/dns/query.py:958: note: "tls" defined here

bin/tests/system/isctest/query.py:55:11: E1123: Unexpected keyword argument 'verify' in function call (unexpected-keyword-arg)

CI images supporting this test: FreeBSD 13 & 14, Alpine Linux, Fedora 40, Ubuntu "noble", Debian "sid".