Update ICU to 58.1

source/data/coll/cy.txt

Index: source/data/coll/cy.txt
diff --git a/source/data/coll/cy.txt b/source/data/coll/cy.txt
index bf9efc56dbb500846a275edfa2a6933f7c5384b1..2168b71b28c98184415c1c8c3f7f7d638b14c48d 100644
--- a/source/data/coll/cy.txt
+++ b/source/data/coll/cy.txt
@@ -1,11 +1,5 @@
-// ***************************************************************************
-// *
-// * Copyright (C) 2015 International Business Machines
-// * Corporation and others. All Rights Reserved.
-// * Tool: org.unicode.cldr.icu.NewLdml2IcuConverter
-// * Source File: <path>/common/collation/cy.xml
-// *
-// ***************************************************************************
+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html#License
 cy{
     Version{"2.1.19.14"}
     collations{
@@ -20,7 +14,7 @@ cy{
                 "&R<rh<<<Rh<<<RH"
                 "&T<th<<<Th<<<TH"
             }
-            Version{"28"}
+            Version{"30"}
         }
     }
 }