Update apt get

Author: orta

.github/workflows/v2-merged.yml

@@ -19,6 +19,7 @@ jobs:
       # For Azure uploads
       - run: curl -sL https://aka.ms/InstallAzureCLIDeb | sudo bash
       # For epub -> PDF conversion
+      - run: sudo apt-get update
       - run: sudo apt install calibre
 
       # Build v2