chore(deps): update pandoc/core docker tag to v3.6.3

Author: renovate[bot]

.circleci/config.yml

@@ -87,7 +87,7 @@ jobs:
   # See thekevjames/tools
   docker-readme-build:
     docker:
-      - image: pandoc/core:3.6.2
+      - image: pandoc/core:3.6.3
     steps:
       - run: apk add --no-cache --no-progress ca-certificates openssl
       - run: mkdir /meta