Editor: Update packages for 6.6.1.

Bugfixes included:

* [WordPress/gutenberg#63637 Elements: Avoid specificity bump for top-level element-only selectors].
* [WordPress/gutenberg#63406 Navigation block: Allow themes to override block library text-decoration rule].
* [WordPress/gutenberg#63436 Fix invalid css for nested fullwidth layouts with zero padding applied].
* [WordPress/gutenberg#63397 Prevent empty void at the bottom of editor when block directory results are present].
* [WordPress/gutenberg#63291 Pattern overrides: Ensure "Reset" button always shows as last item and with border].
* [WordPress/gutenberg#63562 Global Styles: Disable "Reset styles" button when there are no changes].
* [WordPress/gutenberg#63093 Fix: Removed shuffle button when only 1 pattern is present].
* [WordPress/gutenberg#62675 fix: wp icon focus issue].
* [WordPress/gutenberg#63565 useBlockElement: return null until ref callback has time to clean up the old element].

Props ellatrix.
Fixes #61692.
See #61660, #61630, #61656.

git-svn-id: https://develop.svn.wordpress.org/trunk@58757 602fd350-edb4-49c9-b593-d223f7449a82