Does not match last Commonmark specs (0.31.2)

[Mindiell]

Describe the bug

context
When I do benchmarking on last spec of Commonmark.

expectation
I expected 0 error.

bug
But instead 6 tests are not ok.

problem
I would love to have a Commonmark compliant library ;)

Reproduce the bug

1. Install markdown-py-it
2. Load test cases from commonmark : https://spec.commonmark.org/0.31.2/spec.json
3. Use them one by one and test every case is ok

List your environment

No response