Use unversioned environment by default

kajinamit · kajinamit · commit 00461c529108 · 2025-05-27T15:02:52.000+09:00
... so that we don't have to update it when minimum python version is
bumped. CI uses explicit versions and does not use the default
environments.

Change-Id: I9c5c0cec632a4c0c46c25db04743ccd8328196ff
diff --git a/tox.ini b/tox.ini
@@ -1,7 +1,7 @@
 # Python Trove Client
 
 [tox]
-envlist = py39,pep8
+envlist = py3,pep8
 minversion = 3.18.0
 skipsdist = True
 ignore_basepython_conflict = True
