Update to support pandoc 3.x

Pandocomatic 1.1 supports pandoc 3.x. No other changes; No new features added.

Note Due to a change in pandoc-types used by pandoc, you need to upgrade to paru 1.1 and pandocomatic 1.1 when you're using pandoc 3.x. Similarly, if you're still using pandoc 2.x, you cannot upgrade paru or pandocomatic beyond version 1.0.