Default query json parser incorrectly decides the quote is unescaped

If the query response contains a string like "\\\"", the default query json parser is struck as it incorrectly decides the escaped quote in the string as unescaped.

https://github.com/couchbase/couchbase-jvm-core/blob/afae9f84ad3ff3cb07808794a5dd185373f40e82/src/main/java/com/couchbase/client/core/endpoint/util/AbstractStringAwareBufProcessor.java#L51