Update ICU to 54.1 step 1

source/data/unit/de_CH.txt

+// ***************************************************************************
+// *
+// * Copyright (C) 2014 International Business Machines
+// * Corporation and others. All Rights Reserved.
+// * Tool: org.unicode.cldr.icu.NewLdml2IcuConverter
+// * Source File: <path>/common/main/de_CH.xml
+// *
+// ***************************************************************************
+de_CH{
+    Version{"2.1.8.21"}
+    units{
+        area{
+            square-foot{
+                dnam{"Quadratfuss"}
+                one{"{0} Quadratfuss"}
+                other{"{0} Quadratfuss"}
+            }
+        }
+        length{
+            foot{
+                dnam{"Fuss"}
+                one{"{0} Fuss"}
+                other{"{0} Fuss"}
+            }
+        }
+        volume{
+            cubic-foot{
+                dnam{"Kubikfuss"}
+                one{"{0} Kubikfuss"}
+                other{"{0} Kubikfuss"}
+            }
+        }
+    }
+    unitsShort{
+        length{
+            foot{
+                dnam{"Fuss"}
+            }
+        }
+    }
+}