Replace xfail with skipif in calendar_clear_variation1.phpt

Fixes phpGH-11128
Closes phpGH-11801

Author: iluuu1994

ext/intl/tests/calendar_clear_variation1.phpt

@@ -4,9 +4,12 @@ IntlCalendar::clear() 1 arg variation
 date.timezone=Atlantic/Azores
 --EXTENSIONS--
 intl
---XFAIL--
-May currently fail with ICU 73.
-See https://github.com/php/php-src/issues/11128
+--SKIPIF--
+<?php
+if (version_compare(INTL_ICU_VERSION, '73.1') >= 0 && version_compare(INTL_ICU_VERSION, '74.1') < 0) {
+    die('skip Broken for ICU >= 73.1 and < 74.1, see https://github.com/php/php-src/issues/11128');
+}
+?>
 --FILE--
 <?php
 ini_set("intl.error_level", E_WARNING);
@@ -29,4 +32,4 @@ bool(true)
 bool(true)
 bool(false)
 float(1327813567000)
-float(1327813567000)
+float(1327813567000)