Update dependency wpackagist-plugin/unconfirmed to v1.3.7

This MR contains the following updates:

Package	Type	Update	Change
wpackagist-plugin/unconfirmed (source)	require	patch	1.3.6 -> 1.3.7

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composer.json

@@ -118,7 +118,7 @@
         "wpackagist-plugin/multisite-custom-css": "1.0",
         "wpackagist-plugin/activitypub": "1.2.0",
         "wpackagist-plugin/gallery-block-lightbox": "^1.13",
-        "wpackagist-plugin/unconfirmed": "1.3.6",
+        "wpackagist-plugin/unconfirmed": "1.3.7",
         "noblogs/wp-mat": "0.1.4",
         "wpackagist-plugin/secure-encrypted-form": "1.0.1",
         "wpackagist-theme/twentytwentyone": "2.0"