Merge patch series "bintool fixes"

Jerome Forissier <jerome.forissier@linaro.org> says:

Two small fixes for binman (bintool). The first patch avoids a warning,
the second one makes sure the APT package list is up-to-date when
running apt_install(). That one fixes a CI issue I encountered.

Link: https://lore.kernel.org/r/20250724091342.59902-1-jerome.forissier@linaro.org