test: fix issue with Portuguese Republic Day test

The generator for the years on or after the establishment of the Portuguese
Republic Day did not honor the fact that this holiday was suspended in
2013, resulting in tests to fail for years between 2013 and 2016 (when
it was restored again).

Signed-off-by: Sacha Telgenhof <me@sachatelgenhof.com>

tests/Portugal/PortugueseRepublicDayTest.php

@@ -138,7 +138,7 @@ private function randomYearsBeforeEstablishment(): \Generator
      */
     private function randomYearsOnAfterEstablishment(): \Generator
     {
-        yield $this->generateRandomYear(self::ESTABLISHMENT_YEAR);
+        yield $this->generateRandomYear(self::ESTABLISHMENT_YEAR, self::HOLIDAY_YEAR_SUSPENDED - 1);
         yield self::ESTABLISHMENT_YEAR;
     }