android build: pin hashes of p4a recipes

contrib/android/p4a_recipes/setuptools/__init__.py

@@ -0,0 +1,13 @@
+from pythonforandroid.recipes.setuptools import SetuptoolsRecipe
+
+
+assert SetuptoolsRecipe._version == "51.3.3"
+assert SetuptoolsRecipe.depends == ['python3']
+assert SetuptoolsRecipe.python_depends == []
+
+
+class SetuptoolsRecipePinned(SetuptoolsRecipe):
+    sha512sum = "5a3572466a68c6f650111448ce3343f64c62044650bb8635edbff97e2bc7b216b8bbe3b4e3bccf34e6887f3bedc911b27ca5f9a515201cae49cf44fbacf03345"
+
+
+recipe = SetuptoolsRecipePinned()