chore: Update upstream

[calamarico]

Sincronizada con upstream/master y conflictos resueltos.

yarn test v1.0.1
(node:17716) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
$ npm run lint && npm run unit && npm run license-check

> [email protected] lint /home/daniel/workspace/ReDoc
> tslint --project tsconfig.json


> [email protected] unit /home/daniel/workspace/ReDoc
> jest --coverage

 PASS  src/utils/__tests__/helpers.test.ts (10.703s)
 PASS  src/services/__tests__/MarkerService.test.ts
 PASS  src/services/__tests__/MarkdownRenderer.test.ts (13.99s)
 PASS  src/services/__tests__/models/Schema.test.ts
 PASS  src/services/__tests__/models/FieldModel.test.ts
 PASS  src/utils/__tests__/openapi.test.ts (25.566s)
 PASS  src/components/__tests__/DiscriminatorDropdown.test.tsx (16.9s)
 PASS  src/components/__tests__/OneOfSchema.test.tsx
 PASS  src/components/__tests__/JsonViewer.tsx (11.869s)
 PASS  src/services/__tests__/models/Response.test.ts
 PASS  src/services/__tests__/models/ApiInfo.test.ts
 PASS  src/services/__tests__/history.service.test.ts
 PASS  src/services/__tests__/prism.test.ts
 PASS  src/services/__tests__/OpenAPIParser.test.ts
 PASS  src/__tests__/ssr.test.tsx
 PASS  src/__tests__/standalone.test.tsx
  ● Console

    console.warn node_modules/react-dom/cjs/react-dom.development.js:12386
      Warning: componentWillReceiveProps has been renamed, and is not recommended for use. See https://fb.me/react-unsafe-component-lifecycles for details.
      
      * Move data fetching code or side effects to componentDidUpdate.
      * If you're updating state whenever props change, refactor your code to use memoization techniques or move it to static getDerivedStateFromProps. Learn more at: https://fb.me/react-derived-state
      * Rename componentWillReceiveProps to UNSAFE_componentWillReceiveProps to suppress this warning in non-strict mode. In React 17.x, only the UNSAFE_ name will work. To rename all deprecated lifecycles to their new names, you can run `npx react-codemod rename-unsafe-lifecycles` in your project source folder.
      
      Please update the following components: Dropdown


=============================== Coverage summary ===============================
Statements   : 82.28% ( 3395/4126 )
Branches     : 68.4% ( 1383/2022 )
Functions    : 78.62% ( 684/870 )
Lines        : 80.99% ( 2880/3556 )
================================================================================

Test Suites: 16 passed, 16 total
Tests:       140 passed, 140 total
Snapshots:   3 passed, 3 total
Time:        42.63s
Ran all test suites.

> [email protected] license-check /home/daniel/workspace/ReDoc
> license-checker --production --onlyAllow 'MIT;ISC;Apache-2.0;BSD;BSD-2-Clause;BSD-3-Clause' --summary

├─ MIT: 162
├─ ISC: 15
├─ BSD-3-Clause: 11
├─ Apache-2.0: 3
├─ BSD-2-Clause: 3
├─ MIT*: 2
├─ MPL-2.0 OR Apache-2.0: 1
└─ BSD*: 1

Done in 55.70s.```