Merge tag 'v2026.01-rc3' into next

Prepare v2026.01-rc3

diff --cc .azure-pipelines.yml
Simple merge

diff --cc .gitlab-ci.yml
Simple merge

diff --cc MAINTAINERS
Simple merge

diff --cc configs/sandbox64_defconfig
Simple merge

diff --cc configs/sandbox_defconfig
Simple merge

diff --cc doc/api/index.rst
Simple merge

diff --cc drivers/gpio/Kconfig
Simple merge

diff --cc tools/docker/Dockerfile
Simple merge