Tutor v21.0.10 发布

Install this version from pip with:

pip install "tutor[full]==21.0.10"

Or download the compiled binaries:

sudo curl -L "https://github.com/overhangio/tutor/releases/download/v21.0.10/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, uv and Node.js (v24) 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)