Run core tests in Safari. Partially addresses https://github.com/pyodide/pyodide/issues/989

It runs, but there are several test failures, I'll open separate issues about those.
from pytest_pyodide import run_in_pyodide


@run_in_pyodide(packages=["regex"])
def test_regex(selenium):
    import regex

    assert regex.search("o", "foo").end() == 2

from pytest_pyodide import run_in_pyodide


@run_in_pyodide(packages=["regex"])
def test_regex(selenium):
    import regex

    assert regex.search("o", "foo").end() == 2
