ci: Install libfontconfig1-dev system dependency in CI workflow.

Author: celestingm

.github/workflows/ci.yml

@@ -24,6 +24,10 @@ jobs:
           override: true
           components: rustfmt, clippy
 
+      - name: Install System Dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libfontconfig1-dev
       - name: Check Formatting
         run: cargo fmt -- --check