Merge branch 'jb49761' into 'master'

Fix building with aarch64 multilib.

See merge request mer-core/python3-sortedcontainers!2

Merge branch 'jb49642' into 'master'

Use macros for build and install.

See merge request mer-core/python3-sortedcontainers!1

[sortedcontainers] Packaging for version 2.1.0. JB#49282