[WIP] Upgrade CouchDB4j Maven dependency to fix JSON value handling

CouchDB4j is upgraded to a version with a fixed JSON-lib dependency. This fixes handling of string values with JSON-like syntax.

Please test this branch locally and give me feedback if the reported issue is completely fixed and report any regressions you might encounter.

The JSON-lib fixes used for the new Maven artifact: https://github.com/dgerhardt/json-lib/commit/7164fcde2d5c751ee2368184e9cf45d7a4ec5df8