Update dependency wpackagist-plugin/classic-editor to v1.6.7

This MR contains the following updates:

Package	Type	Update	Change
wpackagist-plugin/classic-editor (source)	require	patch	1.6.6 -> 1.6.7

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This MR has been generated by Renovate Bot.

mentioned in issue #139

added 3 commits

• dd528515...a317f083 - 2 commits from branch master
• 05baaed9 - Update dependency wpackagist-plugin/classic-editor to v1.6.7

Compare with previous version

added 3 commits

• 05baaed9...66dbc6b5 - 2 commits from branch master
• e5615a9d - Update dependency wpackagist-plugin/classic-editor to v1.6.7

Compare with previous version

mentioned in commit 0aae5280

merged