Fixes for PHP 8.4

Author: Emre Çalışkan

src/Carbon/CarbonInterface.php

@@ -1162,6 +1162,7 @@ public static function createFromTimeString($time, $tz = null);
      *
      * @return static
      */
+    #[ReturnTypeWillChange]
     public static function createFromTimestamp($timestamp, $tz = null);
 
     /**

src/Carbon/Traits/Timestamp.php

@@ -26,6 +26,7 @@ trait Timestamp
      *
      * @return static
      */
+    #[\ReturnTypeWillChange]
     public static function createFromTimestamp($timestamp, $tz = null)
     {
         return static::createFromTimestampUTC($timestamp)->setTimezone($tz);

tests/Carbon/SettersTest.php

@@ -241,7 +241,7 @@ public function testTimestampSetter()
         $d->timestamp = 1600887164.88952298;
         $this->assertSame('2020-09-23 14:52:44.889523', $d->format('Y-m-d H:i:s.u'));
 
-        $d->setTimestamp(1599828571.23561248);
+        $d->setTimestamp(1599828571.235612);
         $this->assertSame('2020-09-11 08:49:31.235612', $d->format('Y-m-d H:i:s.u'));
 
         $d->timestamp = '0.88951247 1600887164';

tests/CarbonPeriod/Fixtures/AbstractCarbon.php

@@ -82,4 +82,10 @@ public static function createFromFormat($format, $time, $tz = null)
     {
         return parent::createFromFormat($format, $time, $tz);
     }
+
+    #[ReturnTypeWillChange]
+    public static function createFromTimestamp($timestamp, $tz = null)
+    {
+        return parent::createFromTimestamp($timestamp, $tz);
+    }
 }