[CHORE] Help packages migrate to 0.2.0

[tpvasconcelos]

With the upcoming 0.2.0 release, we should proactively open some PR in the following projects addressing the deprecation warnings

Files that need to be updated:

• Ploomber: https://github.com/ploomber/doc/blob/6581ff25958dce043720205b396c09f20a3dcc14/examples/shiny/express-tip-calculator/app.py#L118
• Py-Shiny: https://github.com/posit-dev/py-shiny/blob/8a607870c9841148f6dbae207e9e2ce20d53d6f4/shiny/templates/app/04-dashboard-tips/app-core.py#L157
• Py-Shiny: https://github.com/posit-dev/py-shiny/blob/180830327e6e97b13fef0355c36203c998a3bfc4/shiny/templates/app/04-dashboard-tips/app-express.py#L117
• NiMARE: https://github.com/neurostuff/NiMARE/blob/67cda9792e44e4d890f8895bf6036a371bc58e38/nimare/reports/figures.py#L486

In addition to the files mentioned above, we also need to add a lower bound to the supported version of ridgeplot (i.e., ridgeplot>=0.2.0)

As a nice bonus, we should make use of the new features in 0.2.0 such as the new "fillgradiant" colormode and the (WIP) ability to specify categorical colors.