[PATCH] build: prereq: drop support for Python 3.5

[Petr Štetiar]

Andre Heider <a.heider at gmail.com> [2021-02-16 08:21:08]:

Hi,

> The meson build system bumped their python requirement to 3.6 for the 0.57.0
> release. This patch ensures that OpenWrt can update meson while still
> relying on the host python.

Current buildbot images are based on Debian 9, which uses Python 3.5 so merging this
would result in broken buildbots.

Cheers,

Petr