Updates TeX Live version and package updates.

Updates the TeX Live version to 2025.

Disables the update of all TeX packages during the TeX Live setup to significantly reduce build times.

.github/workflows/quarto-build.yml

@@ -213,7 +213,7 @@ jobs:
         if: inputs.format == 'pdf' || inputs.format == 'all'
         uses: teatimeguest/setup-texlive-action@v3
         with:
-          version: latest
+          version: 2025
           packages: |
             scheme-basic      
             collection-latex  
@@ -229,7 +229,7 @@ jobs:
             newpx          
             luatex85
             listings       
-          update-all-packages: true
+          update-all-packages: false # this slows builds down significantly
           cache: true
           
       - name: 📊 Setup R