CI: Don't stop on first Pytest failure

This makes it easier to see everything that needs to be fixed in case of
multiple issues.

Signed-off-by: Stefan Hansson <newbyte@postmarketos.org>
Part-of: <https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/7384>

.ci/pytest.sh

@@ -29,4 +29,4 @@ pmbootstrap -q shutdown
 # Needed to import "common"
 export PYTHONPATH=".ci/lib"
 # Run testcases
-pytest -vv -x --tb=native "$pmaports/.ci/testcases" "$@"
+pytest -vv --tb=native "$pmaports/.ci/testcases" "$@"