add epstopdf

Author: zingale

.github/workflows/build-book.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Install dependencies
         run: |
           sudo apt-get update -y -qq
-          sudo apt-get -qq -y install texlive texlive-latex-extra texlive-fonts-extra build-essential
+          sudo apt-get -qq -y install texlive texlive-latex-extra texlive-fonts-extra texlive-font-utils build-essential
 
       - name: Build
         run: |