Merge commit '17fa4c7ca' into anoa/dinsic_release_1_21_x

* commit '17fa4c7ca':
  Catch up after Federation Outage (split, 2): Track last successful stream ordering after transmission (#8247)
  Catch-up after Federation Outage (split, 1) (#8230)
  Fix type signature in simple_select_one_onecol and friends (#8241)
  Stop sub-classing object (#8249)

1 files changed, 1 insertions, 1 deletions

diff --git a/contrib/experiments/cursesio.py b/contrib/experiments/cursesio.py

index ffefe3bb39..15a22c3a0e 100644
--- a/contrib/experiments/cursesio.py
+++ b/contrib/experiments/cursesio.py
@@ -141,7 +141,7 @@ class CursesStdIO:
         curses.endwin()
 
 
-class Callback(object):
+class Callback:
     def __init__(self, stdio):
         self.stdio = stdio