github: add an update step before installing texlive

Otherwise you run into issues of the upstream has updated packages
since the last snapshot.

Signed-off-by: Alex Bennée <[email protected]>

.github/workflows/deploy.yaml

@@ -10,6 +10,7 @@ jobs:
       - uses: actions/checkout@v4
       - name: Install Tools
         run: |
+          sudo apt update
           sudo apt install texlive-full
 
       - name: Build Docs