confluence - sort by published in the search

[pmauduit]

Currently, the sort parameter uses "modified" by default:
https://github.com/pmauduit/slack-bot/blob/master/src/main/groovy/fr/spironet/slackbot/confluence/ConfluenceRss.groovy#L61

It would be more relevant to base the result on the "created" / "published" date instead. Decompiling the Confluence code, it seems that the expected value for the sort parameter should then be created:

[pmauduit]

Well it does not work, but there is probably not much I can do here (or sorting groovy-side ...).