Update ICU to 58.1

source/data/coll/my.txt

Index: source/data/coll/my.txt
diff --git a/source/data/coll/my.txt b/source/data/coll/my.txt
index d4c0015f6cfbbb57848dc9781472c8972cda1909..63d3d49180f265e432f25cdf9c1a9bc998c1d563 100644
--- a/source/data/coll/my.txt
+++ b/source/data/coll/my.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/my.xml
-// *
-// ***************************************************************************
+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html#License
 my{
     Version{"2.1.19.14"}
     collations{
@@ -379,7 +373,7 @@ my{
                 "&ထမင်း=ထ္မင်း"
                 "&လက်ဘက်=လ္ဘက်"
             }
-            Version{"28"}
+            Version{"30"}
         }
     }
 }