Refactor GitHub Actions workflow to install LaTeX dependencies and build document directly, updating artifact upload step

.github/workflows/main.yml

@@ -13,7 +13,7 @@ jobs:
     steps:
       - name: Install Node.js
         run: |
-          apt-get update && apt install -y curl
+          apt-get update && apt-get upgrade -y && apt-get install -y curl
           curl -fsSL https://deb.nodesource.com/setup_20.x | bash - 
           apt-get install -y nodejs
 
@@ -25,7 +25,7 @@ jobs:
           curl -fsSL https://miktex.org/download/key | tee /usr/share/keyrings/miktex-keyring.asc > /dev/null
           echo "deb [signed-by=/usr/share/keyrings/miktex-keyring.asc] https://miktex.org/download/ubuntu noble universe" | tee /etc/apt/sources.list.d/miktex.list
           apt-get update
-          apt-get install miktex
+          apt-get install miktex -y
           miktexsetup --shared=yes finish
 
       - name: Build LaTeX document