"Indent" and "Outdent" break the string freeze
Commit 9acd1718 introduced two new strings and broke the string freeze for both GNOME 3.38 and 40. Your options seem to be to:
- revert that commit and wait for after your 40 release, to include that in 41;
- branch off (gnome-3-38 probably) before that point and release 40 from that new branch, without that feature which will (again) be delayed to 41;
- request an exception to the freeze because you really want to include it in 40.
See this wiki page for more information.