Lock file maintenance (#6810)

* Lock file maintenance

* resolve type errors

* revert mdx bump to resolve vercel build errors

* conflict resolution

Co-authored-by: Renovate Bot <bot@renovateapp.com>
Co-authored-by: gwyneplaine <cc.lee@live.com.au>

yarn.lock

@@ -2489,21 +2489,7 @@
   dependencies:
     defer-to-connect "^1.0.1"
 
-"@testing-library/dom@^8.0.0":
-  version "8.7.2"
-  resolved "https://registry.yarnpkg.com/@testing-library/dom/-/dom-8.7.2.tgz#234315c6971be380fc9cbf0b031ada3e9f0bfe09"
-  integrity sha512-2zN0Zv9dMnaMAd4c/1E1ZChu4QrICyvWtkUvHFQBPhS1oG3VYGcM7SLGLYdda7187ILRXzIUOvOsbXQm4EASjA==
-  dependencies:
-    "@babel/code-frame" "^7.10.4"
-    "@babel/runtime" "^7.12.5"
-    "@types/aria-query" "^4.2.0"
-    aria-query "^4.2.2"
-    chalk "^4.1.0"
-    dom-accessibility-api "^0.5.6"
-    lz-string "^1.4.4"
-    pretty-format "^27.0.2"
-
-"@testing-library/dom@^8.10.1":
+"@testing-library/dom@^8.0.0", "@testing-library/dom@^8.10.1":
   version "8.10.1"
   resolved "https://registry.yarnpkg.com/@testing-library/dom/-/dom-8.10.1.tgz#e24fed92ad51c619cf304c6f1410b4c76b1000c0"
   integrity sha512-rab7vpf1uGig5efWwsCOn9j4/doy+W3VBoUyzX7C4y77u0wAckwc7R8nyH6e2rw0rRzKJR+gWPiAg8zhiFbxWQ==