twitter: migrate to a wrapper using Twitter API v2

[GraemeWatt]

Last Friday (14th April 2023), I received an email from Twitter notifying me that the app used to send tweets (HEPData submission) had been suspended from accessing the Twitter API. The same email had a link to a post "Announcing new access tiers for the Twitter API". I requested that the current v1.1 app be unsuspended and moved it to a Project for access to v2 endpoints. It looks like v1.1 access is being deprecated, so we should move to v2. We currently use the twitter Python wrapper which only supports v1, although there is an alpha release for v2. Probably it's better to move to a different Python wrapper with support for v2. I tried tweepy but it requires requests-oauthlib>=1.2.0 conflicting with invenio-oauthclient requiring requests-oauthlib<1.2.0. An alternative option is python-twitter-v2 which seems to be satisfactory when testing.