Any `all.sh` component that runs a script that requires a more recent
version of Python must have a `support_xxx` function that checks for the
requisite Python version or package. At this time, there is no such
requirement yet in the mbedtls repository.
The directory `framework/util` is not yet checked by `pylint` or `mypy`,
because we use older versions of these tools that don't work well with
modern Python versions.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>