Add libfontconfig1-dev system dependency (#13)

Author: NeuroShepherd

.github/workflows/publish.yml

@@ -21,8 +21,8 @@ jobs:
       - name: Install libcurl4-openssl-dev
         run: sudo apt-get install -y libcurl4-openssl-dev
 
-      - name: Install libharfbuzz-dev libfribidi-dev libtiff5-dev
-        run: sudo apt install libharfbuzz-dev libfribidi-dev libtiff5-dev
+      - name: Install libharfbuzz-dev libfribidi-dev libtiff5-dev libfontconfig1-dev
+        run: sudo apt install libharfbuzz-dev libfribidi-dev libtiff5-dev libfontconfig1-dev
 
       - uses: r-lib/actions/setup-r@v2
       - uses: r-lib/actions/setup-renv@v2