Update pandoc_workflow.yaml

Author: dreamos82

.github/workflows/pandoc_workflow.yaml

@@ -24,7 +24,7 @@ jobs:
           sudo apt-get -y update
           sudo apt-get -y upgrade
           sudo apt-get -y install texlive-latex-base texlive texlive-xetex texlive-fonts-recommended librsvg2-2 liblua5.3-0 librsvg2-bin librsvg2-common
-          wget http://ports.ubuntu.com/pool/main/g/gmp/libgmp10_6.2.1+dfsg1-1ubuntu2_amd64.deb
+          wget http://launchpadlibrarian.net/620071728/libgmp10_6.2.1+dfsg1-1ubuntu2_amd64.deb
           wget https://blueprints.launchpad.net/ubuntu/+archive/primary/+files/pandoc_2.17.1.1-1ubuntu2_amd64.deb
           wget http://launchpadlibrarian.net/621653025/pandoc-data_2.17.1.1-1ubuntu2_all.deb 
           sudo dpkg -i libgmp10_6.2.1+dfsg1-1.1ubuntu1_amd64.deb