add comments specifying why coverage is not used on Python 3.13

Author: ndgrigorian

conda-recipe/run_test.sh

@@ -4,6 +4,9 @@ set -e
 
 ${PYTHON} -c "import dpctl; print(dpctl.__version__)"
 ${PYTHON} -m dpctl -f
+# don't use coverage for Python 3.13 due to crashes related to
+# Cython >= 3.1.0 and Python >= 3.13
+# TODO: remove if crash is triaged
 if ${PYTHON} --version 2>&1 | grep -q '^Python 3\.13'; then
     ${PYTHON} -m pytest -q -ra --disable-warnings --pyargs dpctl -vv
 else