Editor: update packages.

Updates the packages to match Gutenberg version 21.9.0 RC2.

Also updates the sync script to work with the new `package-lock.json` format.
Some reusable block tests were adjusted to work with more render arguments.
Added `core-data` to the ignore list for `verify:source-maps` because Yjs has been bundled by accident. To be removed in a follow-up. See https://core.trac.wordpress.org/ticket/64120. See WordPress/gutenberg#72503.

See: #10355.
See: https://core.trac.wordpress.org/ticket/64117.

Props ellatrix, dmsnell.
Fixes #64117.

git-svn-id: https://develop.svn.wordpress.org/trunk@61009 602fd350-edb4-49c9-b593-d223f7449a82

Author: ellatrix

Gruntfile.js

@@ -1785,6 +1785,9 @@ module.exports = function(grunt) {
 		const ignoredFiles = [
 			'build/wp-includes/js/dist/components.js',
 			'build/wp-includes/js/dist/data.js',
+			// We have a problem where Yjs is being bundled in core-data.
+			// Ignoring this file until we find a solution.
+			'build/wp-includes/js/dist/core-data.js',
 		];
 		const files = buildFiles.reduce( ( acc, path ) => {
 			// Skip excluded paths and any path that isn't a file.