Using static methods instead of deprecated JsonParser

[theexplorist]

We can remove the deprecated JsonParser with static methods as mentioned in Gson documentation.

The expected result will solve the code smell below -
https://sonarcloud.io/project/issues?id=jkubeio_jkube&open=AXgDJoU2sHuH603U0SQ6&resolved=false&severities=MINOR

Proposed Solution

try(JsonReader json = new JsonReader(new InputStreamReader(stream))) {
            json.setLenient(true);
            while (json.peek() != JsonToken.END_DOCUMENT) {
            	JsonObject jsonObject = JsonParser.parseReader(json).getAsJsonObject();
                handler.process(jsonObject);
            }
        } finally {
            handler.stop();
        }

If the issue and proposed solution seems correct then I can send a PR.