Update CI container dependencies.

It suddenly started getting the following error:

npm ERR! Package pangocairo was not found in the pkg-config search path.
npm ERR! Perhaps you should add the directory containing `pangocairo.pc'
npm ERR! to the PKG_CONFIG_PATH environment variable
npm ERR! No package 'pangocairo' found
npm ERR! gyp: Call to 'pkg-config pangocairo --cflags-only-I | sed s/-I//g' returned exit status 0 while in binding.gyp. while trying to load binding.gyp

Trying some advice from
https://github.com/Automattic/node-canvas/issues/200

.gitlab-ci.yml

@@ -3,6 +3,6 @@ image: node:latest
 test:
   script:
     - apt-get update
-    - apt-get install -y openjdk-8-jre
+    - apt-get install -y openjdk-8-jre libpango1.0-dev
     - npm install
     - ./node_modules/.bin/shadow-cljs compile test