ci: install native deps (see README.md)

Author: cwillisf

.github/workflows/deploy.yml

@@ -36,8 +36,8 @@ jobs:
             EOF
         - name: Setup
           run: |
-            # sudo apt update
-            # sudo apt install libgif-dev
+            sudo apt update
+            sudo apt install pkg-config libcairo2-dev libpango1.0-dev libssl-dev libjpeg62-dev libgif-dev
             TRAVIS_BRANCH="${{github.ref_name}}" travis/setup-git.sh # Configure git user info
             travis/install-assets.sh
             npm set progress=false