Use stable constraint in tox to release Tempest new tag

We are going to release Tempest new tag which work with
the stable/2023.1 constraint so use that in the tox env.

For example: if anyone use Tempest new tag in future say
1 year later then tox env also should use the 2023.1 contstraint for
compatibility instead master.

These need to be move back to master constraint once release is done.

Change-Id: I81c251c7f006b8792c006db88bd47fdb40df14a1
1 file changed