upgrade plotly.js

[cpsievert]

TODO

These plotly.js release notes will require some R changes:

• title attributes linked to strings are now deprecated. Please use title.text instead to fill in your title text [#3276]
• title* attributes are now deprecated. They moved to title.*. For example, colorbar.titleside is now colorbar.title.side [#3276]

FWIW, I'm pretty sure layout.title, layout.titlefont, layout[axisid].title, layout[axisid].titlefont, marker.colorbar.title, marker.colorbar.titlefont, marker.colorbar.titleside, and carpet-specific attributes are the only ones effected.

• It looks like these attributes still work, but be good form to identify these cases on the R side and throw an information deprecation message/warning.
• Update any 'internal' logic using these attributes to use the new nested structure.
• Would also be a good time to have ggplotly() leverage the new layout.title and layout[axisid].title placement attributes

[cpsievert]

Closing in favor of #1506