CI: Install unreleased "py" package for 3.11-dev

tk0miya · tk0miya · commit 83c022c01929 · 2021-10-07T02:51:00.000+09:00
diff --git a/tox.ini b/tox.ini
@@ -22,6 +22,7 @@ deps =
     du15: docutils==0.15.*
     du16: docutils==0.16.*
     du17: docutils==0.17.*
+    py310: git+https://github.com/pytest-dev/py
 extras =
     test
 setenv =
