Support application/ld+json mime type

Fixes #1842

Author: kderme

cardano-db-sync/src/Cardano/DbSync/OffChain/Http.hs

@@ -172,6 +172,8 @@ httpGetBytes manager request bytesToRead maxBytes url =
                   OCFErrBadContentTypeHtml url (Text.decodeLatin1 ct)
               unless
                 ( "application/json"
+                    `BS.isInfixOf` ct
+                    || "application/ld+json"
                     `BS.isInfixOf` ct
                     || "text/plain"
                     `BS.isInfixOf` ct