Update dependency wpackagist-plugin/disable-wordpress-updates to v1.6.8

This MR contains the following updates:

Package	Type	Update	Change
wpackagist-plugin/disable-wordpress-updates (source)	require	patch	1.6.7 -> 1.6.8

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composer.json

@@ -35,7 +35,7 @@
         "koodimonni/composer-dropin-installer": "1.3",
         "johnpbloch/wordpress": "5.8.0",
         "bjornjohansen/wplang": "0.1.1",
-        "wpackagist-plugin/disable-wordpress-updates": "1.6.7",
+        "wpackagist-plugin/disable-wordpress-updates": "1.6.8",
         "wpackagist-plugin/more-privacy-options": "4.6",
         "wpackagist-plugin/disable-emojis": "1.7.3",
         "wpackagist-plugin/wp-super-cache": "1.7.4",