DeprecationWarning util.isDate util.isArray

[p10tyr]

p10tyr/rtsp-to-onvif#9

I can make a PR for this. I just want to check if there is somebody around still that will be able to merge it in?

(node:1) [DEP0047] DeprecationWarning: The util.isDate API is deprecated. Please use arg instanceof Date instead.
(node:1) [DEP0044] DeprecationWarning: The util.isArray API is deprecated. Please use Array.isArray() instead.

[tricoos]

Node 23.0.5 will actually break this library as util.isDate has been removed now. For util.isArray the deprecation warning exists.
In both cases the changes are required in AbstractAppender.js
As a fix util.isDate(item) has to be replaced by item instanceof Date and util.isArray(msg) has to be replaced by Array.isArray(msg)