remove our workaround for mistune (#794)

Author: jonkeane

pyproject.toml

@@ -30,7 +30,6 @@ test = [
     "flake8",
     "httpretty",
     "ipykernel",
-    "mistune<3.3; python_version=='3.8'",  # 3.3+ uses re.Pattern[str], invalid on 3.8
     "nbconvert",
     "pyright",
     "pytest-cov",

tests/test_quickstart.py

@@ -819,20 +819,13 @@ def fake_get_data(package: str, resource: str):
 # ---------------------------------------------------------------------------
 
 
-# nbconvert pulls mistune>=3.3, which uses re.Pattern[str] and is broken on
-# Python 3.8; skip the jupyter-based scaffolds there.
-_PY38_NBCONVERT_SKIP = pytest.mark.skipif(
-    sys.version_info < (3, 9),
-    reason="nbconvert pulls mistune>=3.3 which is broken on Python 3.8",
-)
-
 BOOT_SMOKE_MATRIX = [
     pytest.param("streamlit", "http", id="streamlit"),
     pytest.param("shiny", "http", id="shiny"),
     pytest.param("fastapi", "http", id="fastapi"),
     pytest.param("api", "http", id="api"),
-    pytest.param("voila", "http", id="voila", marks=_PY38_NBCONVERT_SKIP),
-    pytest.param("notebook", "artifact", id="notebook", marks=_PY38_NBCONVERT_SKIP),
+    pytest.param("voila", "http", id="voila"),
+    pytest.param("notebook", "artifact", id="notebook"),
     pytest.param("quarto", "artifact", id="quarto"),
 ]