update to pandoc 0.4.2

Author: chrisfenner

.github/workflows/main.yml

@@ -13,7 +13,7 @@ jobs:
   render:
     runs-on: ubuntu-latest
     container:
-      image: ghcr.io/trustedcomputinggroup/pandoc:0.3.1
+      image: ghcr.io/trustedcomputinggroup/pandoc:0.4.2
     name: Render PDF
     steps:
       - name: Checkout