chore(deps): update minor and patch for gatsby-plugin-mdx

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@mdx-js/mdx (source)	^1.6.16 -> ^1.6.21
@mdx-js/react (source)	^1.6.16 -> ^1.6.21
core-js	^3.6.5 -> ^3.7.0
debug	^4.1.1 -> ^4.2.0
pretty-bytes	^5.3.0 -> ^5.4.1
react-test-renderer (source)	^16.13.1 -> ^16.14.0
slugify	^1.4.4 -> ^1.4.6

---

Release Notes

mdx-js/mdx

v1.6.21

Compare Source

v1.6.20

Compare Source

v1.6.19

Compare Source

v1.6.18

Compare Source

v1.6.17

Compare Source

zloirock/core-js

v3.7.0

Compare Source

• String#replaceAll moved to the stable ES, per June TC39 meeting
• Promise.any and AggregateError moved to the stable ES, per July TC39 meeting
• Added Reflect[@​@​toStringTag], per July TC39 meeting
• Forced replacement of Array#{ reduce, reduceRight } in Chrome 80-82 because of a bug, #​766
• Following the changes in the upsert proposal, { Map, WeakMap }#emplace replace { Map, WeakMap }#upsert, these obsolete methods will be removed in the next major release
• By the current spec, AggregateError#errors is own data property
• Added correct iteration closing in the iteration helpers according to the current version of the proposal
• process.nextTick have a less priority when Promise in the microtask implementation, #​855
• Fixed microtask implementation in engines with MutationObserver, but without document, #​865, #​866
• Fixed core-js-builder with an empty (after the targets engines or another filtration) modules list, #​822
• Fixed possible twice call of window.onunhandledrejection, #​760
• Fixed some possible problems related multiple global copies of core-js, #​880
• Added a workaround for 3rd party Reflect.set polyfill bug, #​847
• Updated compat data:
  • Chrome up to 86
  • FF up to 82
  • Safari up to 14
• Updated compat data mapping:
  • iOS up to 14
  • NodeJS up to 15.0
  • Electron up to 11.0
  • Samsung Internet up to 13.0
  • Opera Android up to 60
  • The rest automatically
• Updated all required dependencies

visionmedia/debug

v4.2.0

Compare Source

Minor Release

• Replaced phantomJS with chrome backend for browser tests
• Deprecated and later removed Changelog.md in lieu of releases page
• Removed bower.json (#​602)
• Removed .eslintrc (since we've switched to XO)
• Removed .coveralls.yml
• Removed the build system that was in place for various alternate package managers
• Removed the examples folder (#​650)
• Switched to console.debug in the browser only when it is available (#​600)
• Copied custom logger to namespace extension (#​646)
• Added issue and pull request templates
• Added "engines" key to package.json
• Added ability to control selectColor (#​747)
• Updated dependencies
• Marked supports-color as an optional peer dependency

sindresorhus/pretty-bytes

v5.4.1

Compare Source

• Fix binary and bits option being used together (#​61) 1333349

v5.4.0

Compare Source

• Add binary option (#​60) 4ef01f4

facebook/react

v16.14.0

Compare Source

React

• Add support for the new JSX transform. (@​lunaruan in #​18299)

simov/slugify

v1.4.6

Compare Source

v1.4.5

Compare Source

---

Renovate configuration

📅 Schedule: "before 7am on Monday" in timezone GMT.

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻️ Rebasing: Renovate will not automatically rebase this PR, because other commits have been found.

👻 Immortal: This PR will be recreated if closed unmerged. Get config help if that's undesired.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by WhiteSource Renovate. View repository job log here.