forth: update tests to v1.5.0 (#1336)
forth: update tests to v1.5.0 (#1336)


smalley/python,exercism/xpython,jmluy/xpython,exercism/python,jmluy/xpython,behrtam/xpython,smalley/python,N-Parsons/exercism-python,N-Parsons/exercism-python,exercism/python,behrtam/xpython,exercism/xpython