scripts: update: commit systematically the update

Not committing cube update leave some trailing space
and this cause confusion and misunderstanding.
So Cube update is now systematically committed.
Remove "--force" option

(cherry picked from commit f9fe0ccba5dcdfc40b8cdecbedb6a3565b0df892)

Signed-off-by: Alexandre Bourdiol <alexandre.bourdiol@st.com>
GitOrigin-RevId: f9fe0ccba5dcdfc40b8cdecbedb6a3565b0df892
Change-Id: I3e076865ba88f5535d20f665e6986deeeb5c4566
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/zephyr/hal_stm32/+/3307683
Tested-by: CopyBot Service Account <copybot.service@gmail.com>
Reviewed-by: Jack Rosenthal <jrosenth@chromium.org>
Reviewed-by: Yuval Peress <peress@google.com>
Commit-Queue: Jack Rosenthal <jrosenth@chromium.org>