chore(CI): add tests for ESLint 8

[MichaelDeBoey]

ESLint v8.0.0 is released 🎉

devDependency compatibility with ESLint 8:

• [x] @babel/eslint-parser (https://github.com/babel/babel/issues/13712)
  • [x] https://github.com/babel/babel/pull/13782
  • [x] v7.16.0
• [x] @babel/eslint-plugin (https://github.com/babel/babel/issues/13712)
  • [x] ~PR~
  • [x] ~Release~
• [x] @typescript-eslint/eslint-plugin (https://github.com/typescript-eslint/typescript-eslint/issues/3738)
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3737
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3767
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3768
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3800
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3806
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3808
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3809
  • [x] v5.0.0
• [x] @typescript-eslint/parser (https://github.com/typescript-eslint/typescript-eslint/issues/3738)
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3737
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3767
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3768
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3800
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3806
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3808
  • [x] https://github.com/typescript-eslint/typescript-eslint/pull/3809
  • [x] v5.0.0
• [ ] eslint-config-google (https://github.com/google/eslint-config-google/issues/68)
  • [ ] PR
  • [ ] Release
• [x] eslint-find-rules (https://github.com/sarbbottam/eslint-find-rules/issues/336)
  • [x] https://github.com/sarbbottam/eslint-find-rules/pull/337
  • [x] v4.0.0
• [x] eslint-plugin-flowtype (https://github.com/gajus/eslint-plugin-flowtype/issues/495)
  • [x] https://github.com/gajus/eslint-plugin-flowtype/commit/05c3ae13fd90c61a116eb0a5d8afd1ad7e0a3841
  • [x] v8.0.0
• [x] eslint-plugin-prettier (https://github.com/prettier/eslint-plugin-prettier/issues/427)
  • [x] https://github.com/prettier/eslint-plugin-prettier/pull/428
  • [x] ~Release~
• [x] eslint-plugin-react (https://github.com/yannickcr/eslint-plugin-react/issues/3055)
  • [x] https://github.com/yannickcr/eslint-plugin-react/pull/3059
  • [x] v7.27.0
• [x] eslint-plugin-unicorn (https://github.com/sindresorhus/eslint-plugin-unicorn/issues/1486)
  • [x] https://github.com/sindresorhus/eslint-plugin-unicorn/pull/1488
  • [x] v37.0.0
• [x] eslint-plugin-vue (https://github.com/vuejs/eslint-plugin-vue/issues/1615)
  • [x] https://github.com/vuejs/eslint-plugin-vue/pull/1588
  • [x] https://github.com/vuejs/eslint-plugin-vue/pull/1610
  • [x] v8.0.0

[lampewebdev]

Any reason why this is a draft and can't be merged?