chore: upgrade phpunit to 12.5

tests/Config/SeasonCalendarTest.php

@@ -14,9 +14,7 @@ class SeasonCalendarTest extends TestCase
         return new SeasonCalendar('11-01', '04-01');
     }
 
-    /**
-     * @dataProvider winterDates
-     */
+    #[\PHPUnit\Framework\Attributes\DataProvider('winterDates')]
     public function testSeasonYearForTheWrappingWinterWindow(string $date, ?int $expected): void
     {
         $this->assertSame($expected, $this->winter()->seasonYearFor(new \DateTimeImmutable($date)));
@@ -44,9 +42,7 @@ class SeasonCalendarTest extends TestCase
         $this->assertSame('außerhalb der Saison', $calendar->label(null));
     }
 
-    /**
-     * @dataProvider summerDates
-     */
+    #[\PHPUnit\Framework\Attributes\DataProvider('summerDates')]
     public function testSeasonYearForANonWrappingWindow(string $date, ?int $expected): void
     {
         $calendar = new SeasonCalendar('06-01', '09-01');
@@ -71,9 +67,7 @@ class SeasonCalendarTest extends TestCase
         (new SeasonCalendar('xx-yy', '04-01'))->seasonYearFor(new \DateTimeImmutable('2025-01-01'));
     }
 
-    /**
-     * @dataProvider currentOrUpcomingDates
-     */
+    #[\PHPUnit\Framework\Attributes\DataProvider('currentOrUpcomingDates')]
     public function testCurrentOrUpcomingSeasonYear(string $date, int $expected): void
     {
         $this->assertSame(
@@ -117,9 +111,7 @@ class SeasonCalendarTest extends TestCase
         $this->assertSame('2025-09-30', $end->format('Y-m-d'));
     }
 
-    /**
-     * @dataProvider provideUpcomingSeasonDates
-     */
+    #[\PHPUnit\Framework\Attributes\DataProvider('provideUpcomingSeasonDates')]
     public function testTheCurrentOrUpcomingSeasonYear(string $date, int $expected): void
     {
         $calendar = new SeasonCalendar('11-01', '04-01');

tests/Config/SeasonTaskTest.php

@@ -31,9 +31,7 @@ class SeasonTaskTest extends TestCase
         $this->assertSame($labels, array_unique($labels));
     }
 
-    /**
-     * @dataProvider entries
-     */
+    #[\PHPUnit\Framework\Attributes\DataProvider('entries')]
     public function testTheAgreedEntryList(
         SeasonTask $task,
         string $label,