[crystax] Add hostpython recipes to CORE_RECIPES

Because we already build them whenever we build our python recipes, so this way we will avoid to make it fail the `CI` test `rebuild_updated_recipes` in the case that we have to touch both hostpython recipes at the same time

Author: opacam

ci/constants.py

@@ -86,5 +86,5 @@ class TargetPython(Enum):
 # recipes that were already built will be skipped
 CORE_RECIPES = set([
     'pyjnius', 'kivy', 'openssl', 'requests', 'sqlite3', 'setuptools',
-    'numpy', 'android', 'python2', 'python3',
+    'numpy', 'android', 'hostpython2', 'hostpython3', 'python2', 'python3',
 ])