Bump WP compatibility

.phpcs.xml.dist

@@ -7,7 +7,7 @@
 	<exclude-pattern>/vendor/</exclude-pattern>
 	<exclude-pattern>/node_modules/</exclude-pattern>
 	<exclude-pattern>/tests/*</exclude-pattern>
-	<exclude>tag-dropdown-widget.php</exclude>
+	<exclude>/tag-dropdown-widget.php</exclude>
 
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