chore: Adopt inclusive language

[gkartalis]

Description

This PR resolves the issue: https://github.com/artsy/positron/issues/3015 per https://github.com/artsy/README/issues/427

• [x] src/boot.js
• [x] /.env.oss
• [ ] src/api/apps/articles/model/save.coffee
• [x] src/api/apps/articles/test/model/save.spec.ts

I've set the following in hokusai with the pre-existing IP's

• hokusai staging env set IP_DENYLIST=XX.XXXx.xxXx.x
• hokusai production env set IP_DENYLIST=XX.XXXx.xxXx.x
• hokusai production refresh
• hokusai staging refresh

Not addressed

src/api/apps/articles/model/save.coffee

The reason for that is that we use an external dependency https://github.com/leizongmin/js-xss that still uses in their api the word whitelist and getDefaultWhitelist.

To Do / Next Steps:

• [x] deploy positron staging
• [x] remove env variable IP_BLACKLIST from hokusai staging
• [x] deploy positron production
• [x] remove env variable IP_BLACKLIST from hokusai production