In #2893 we introduced a strategy for pinning depot_tools versions in release branches. This has been problematic recently due to DEPS format changes (example, example). It may be better to start pinning depot_tools versions only after the branch exits the stable channel. That way currently supported release branches use up-to-date main, and out-of-support branches still have the depot_tools version pinned to increase the chance of builds succeeding.
In #2893 we introduced a strategy for pinning depot_tools versions in release branches. This has been problematic recently due to DEPS format changes (example, example). It may be better to start pinning depot_tools versions only after the branch exits the stable channel. That way currently supported release branches use up-to-date main, and out-of-support branches still have the depot_tools version pinned to increase the chance of builds succeeding.