Ubuntu 22.04 and Python 3.10 preparation

Change-Id: I57a4ee39c101bdab610a6964de58eaa2653d37a3
Signed-off-by: Guillermo Calvino <guillermo.calvino@canonical.com>
Signed-off-by: Mark Beierl <mark.beierl@canonical.com>
diff --git a/tox.ini b/tox.ini
index 08a145f..d4e8594 100644
--- a/tox.ini
+++ b/tox.ini
@@ -23,7 +23,7 @@
 
 [testenv]
 usedevelop = True
-basepython = python3.8
+basepython = python3.10
 setenv = VIRTUAL_ENV={envdir}
          PYTHONDONTWRITEBYTECODE = 1
 deps =  -r{toxinidir}/requirements.txt