Adding an ignore rule to the optional classes check (#22521)

Author: adalpari

WordPress/proguard.cfg

@@ -102,3 +102,9 @@
 -keep class * extends androidx.fragment.app.Fragment
 
 ###### Main resource class - end
+
+###### jsoup - begin
+# jsoup has optional support for Google's RE2J regex library which is not included
+-dontwarn com.google.re2j.Matcher
+-dontwarn com.google.re2j.Pattern
+###### jsoup - end