Zephyr v3.1 release date moved 1 week earlier

Bolivar, Marti

Hi everyone,

During today's Zephyr TSC meeting, we voted to move the release date for
Zephyr v3.1 to 1 week earlier. This affects the feature freeze date as
well, by the same amount of time.

Updated dates are here:


The main reason is to avoid overlap with Zephyr Developer's Summit 2022,
which conflicts with the previous release date.

Diff from the old dates is here:


Marti and Carles
v3.1 release managers