Investigate (& report?) performances on JIT runtimes

[masklinn]

• test runtime on pypy is not great, this might be because of pure-python pyyaml being slow, -m ua_parser does not work for pypy #206 would probably help rule that out (or in)
• graal was added commented to GHA, but was even slower than pypy (graalpy 24 was just released: https://github.com/oracle/graalpython/releases/tag/graal-24.0.0)