Update docs.yml

Author: flagarde

.github/workflows/docs.yml

@@ -53,7 +53,7 @@ jobs:
       - name: 🟨 Install LaTeX packages
         run: |
           tlmgr update --self
-          tlmgr install latex-bin newunicodechar latex-tools-dev pgf twemojis courier dvips wasy epstopdf-pkg helvetic etoc caption pdftexcmds hyperref tocloft natbib fancyhdr changepage geometry psnfss ec ulem intcalc alphalph enumitem etoolbox stackengine amsfonts adjustbox iftex hanging ltxcmds kvsetkeys kvdefinekeys infwarerr kvoptions float xcolor colortbl varwidth fancyvrb multirow epstopdf
+          tlmgr install fontspec latex-bin newunicodechar latex-tools-dev pgf twemojis courier dvips wasy epstopdf-pkg helvetic etoc caption pdftexcmds hyperref tocloft natbib fancyhdr changepage geometry psnfss ec ulem intcalc alphalph enumitem etoolbox stackengine amsfonts adjustbox iftex hanging ltxcmds kvsetkeys kvdefinekeys infwarerr kvoptions float xcolor colortbl varwidth fancyvrb multirow epstopdf
           tlmgr list --only-installed
 
       - name: 🐍 Install Conda environment