message: chore: update swagger2openapi to 3.1.2
  This includes the fix for x-discriminator.
  Fixes
diff: "slugify": "^1.2.1",
  "stickyfill": "^1.1.1",
  "styled-components": "^3.3.3",
  - "swagger2openapi": "^2.11.0",
  + "swagger2openapi": "^3.1.2",
  "tslib": "^1.9.3"
  },
  "resolutions": {
  