Tutor v20.0.6 发布

Install this version from pip with:

pip install "tutor[full]==20.0.6"

Or download the compiled binaries:

sudo curl -L "https://github.com/overhangio/tutor/releases/download/v20.0.6/tutor-$(uname -s)_$(uname -m)" -o /usr/local/bin/tutor

sudo chmod 0755 /usr/local/bin/tutor

See the [installation docs](https://docs.tutor.edly.io/install.html) for more installation options and instructions.

## Changes

- [Security] Upgrade certifi, pip and Node.js (v22) in the Open edX image, and Caddy, to stop trusting the compromised eMudhra/emSign CA certificates. See https://github.com/overhangio/tutor/issues/1515. (by @ahmed-arb)

- [Bugfix] Pin `setuptools` in pip's isolated build environments, so that pip 26 can still build source packages such as `loremipsum`. Backport of #1411. (by @ahmed-arb)