[fix] update missing item in activity 4

[Remi-Gau]

Quick fix:

• email item is already in activity 3
• float item was not presented in activity 4

[Remi-Gau]

Side note that might be more appropriate on the reproschem-py repo: Shouldn't validation also ensure that the items listed in an activity actually "exist"?
Other wise most apps that implement the schema will just hang eternally.

[satra]

Shouldn't validation also ensure that the items listed in an activity actually "exist"?

Good question. Validation checks the graph presently not content derived from a location. So it checks that the pointer acts as a uri not a url. Indeed would be good to test that the uri are also url. That should be an easy addition given the triples.

[Remi-Gau]

will open an issue on reproschema-py at least a reminder

[Remi-Gau]

Closing as this is now obsolete