[META] Update yarn dependencies

Ran yarn outdated and autoprefixer has a 9.7.6 update available as of 16 hours ago 🙂

Updated Patch.

I applied #6 and then reran the commands in #2 and there are no differences, therefore we are on the latest versions for everything and this is good to go.

+++ b/core/themes/claro/js/tabledrag.js
@@ -5,7 +5,7 @@
 
-function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
 

Do we really want this @babel/helplers stuff in core js? It is very possible I've missed something and we do, but first time I've seen it.

I also had the same reaction as #11.

We should probably do #3107926: Update stylelint to ^13.0.0 first and then regenerate some updates -- postponing on that issue.

With nodejs 12.17.0 our js compiling script is broken, upgrading all babel dependencies fixes thing, but like said in #11 there is some extra stuff in the generated JS.
#3143289: Upgrade babel dependencies (yarn run build:js broken)

Should this become a META and we set #3118741: [Security] Update yarn dependencies to fix security issues as another child?

Removing duplicate devDependencies column to try to get the summary to fit better instead of crashing into sidebar so much. ;)

Turning this into a meta since there are multiple children to help scope.

Removing empty CHANGELOG column.

So @dww I think on 9.0.x we should be using the full update here. It's 8.9.x and especially 8.8.x that need more careful updates to reduce risk of regressions.

Added two more children... #3145177: Update JS dev dependencies for latest major versions and #3145197: Update eslint to v7 and prettier to v2 when airbnb standard supports it