Release 1.20.2

[DeeDeeG]

Changelog

DeeDeeG (1): Update dependencies for April 2021 (#661)

Checklist

• [x] Tested Mobile Responsiveness
• [ ] Added Unit Tests
• [x] CI Passes
• [x] Deploys to Heroku on test Correctly (Maintainers will handle)
• [ ] Added Documentation (Service and Code when required)

[DeeDeeG]

Squashed commit message should look like this when merged:

* Update dependencies for April 2021 (#661)

  - yarn.lock: Update postcss-svgo, drop is-css

  - yarn.lock: Update ssri to latest 6.x and 8.x

  - yarn.lock: Update y18n from 4.0.0 to 4.0.3

  - Gemfile[.lock]: Update Rails to 5.2.5
      Also update its dependencies.

  - Gemfile.lock: Bump rexml from 3.2.4 to 3.2.5

  - ruby: Bump Ruby from 2.7.2 to 2.7.3

(After trimming out all the unrelated commits' messages and the no-longer-applicable Co-authored-by: tags).