fix: upgrade multiple dependencies with Snyk

Snyk has created this PR to upgrade:
  - @redocly/openapi-core from 1.0.0-rc.2 to 1.20.1.
    See this package in npm: https://www.npmjs.com/package/@redocly/openapi-core
  - classnames from 2.3.1 to 2.5.1.
    See this package in npm: https://www.npmjs.com/package/classnames
  - core-js from 3.14.0 to 3.38.1.
    See this package in npm: https://www.npmjs.com/package/core-js
  - dompurify from 2.2.9 to 2.5.6.
    See this package in npm: https://www.npmjs.com/package/dompurify
  - marked from 4.0.15 to 4.3.0.
    See this package in npm: https://www.npmjs.com/package/marked
  - mobx from 6.3.2 to 6.13.1.
    See this package in npm: https://www.npmjs.com/package/mobx
  - mobx-react from 7.2.0 to 7.6.0.
    See this package in npm: https://www.npmjs.com/package/mobx-react
  - openapi-sampler from 1.3.1 to 1.5.1.
    See this package in npm: https://www.npmjs.com/package/openapi-sampler
  - polished from 4.1.3 to 4.3.1.
    See this package in npm: https://www.npmjs.com/package/polished
  - prismjs from 1.27.0 to 1.29.0.
    See this package in npm: https://www.npmjs.com/package/prismjs
  - prop-types from 15.7.2 to 15.8.1.
    See this package in npm: https://www.npmjs.com/package/prop-types
  - slugify from 1.4.7 to 1.6.6.
    See this package in npm: https://www.npmjs.com/package/slugify
  - swagger2openapi from 7.0.6 to 7.0.8.
    See this package in npm: https://www.npmjs.com/package/swagger2openapi

See this project in Snyk:
https://app.snyk.io/org/elohimministrys/project/ca0a4e06-74b2-472b-ab81-426ec9bd10d7?utm_source=github&utm_medium=referral&page=upgrade-pr