setting up wkhtmltopdf

.github/workflows/build.yml

@@ -10,7 +10,7 @@ jobs:
       - uses: actions/checkout@v3
       - name: Install wkthtmltopdf
         run: |
-          sudo apt-get install -y xfonts-base xfonts-75dpi
+          sudo apt-get install -y xfonts-base xfonts-75dpi xvfb libfontconfig
           wget https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6.1-2/wkhtmltox_0.12.6.1-2.jammy_amd64.deb
           sudo dpkg -i wkhtmltox_0.12.6.1-2.jammy_amd64.deb
       - name: Set up JDK 11