SYS-1315: Fix npm install problem on Mac M1

[akohler]

This hopefully fixes a problem which occurs when building this Docker image on Mac M1 machines. They need npm packages built for arm64 architecture... and node-canvas apparently has stopped doing that.

The Ex Libris node environment which gets built into this Docker image doesn't explicitly require canvas, but something tries to pull it in, and the missing arm64 packages cause that npm install to fail.

Per various issues, installing some extra OS-level packages may help. This PR adds cairo and pango, which should allow canvas to get built from source by npm install.

This doesn't break anything on my end... I tried building for MacOS via Github Actions, but the docker buildx actions wouldn't run on that OS :( - and the GA environment apparently does not yet support M1 runners anyhow.

So, to test:

git pull
git checkout SYS-1315/fix_mac_canvas
docker-compose down
docker-compose build

Watch output carefully for errors other than the many deprecation warnings, and let me know the outcome.

[ztucker4]

Kristian and I have tested this and it works - we're seeing successful builds on our Macs. Merging, thanks!