Release 2.9.0 (#4526)

* added fix to work around bc break in new phpword version
* fix phpoffice deprecations
* mark unused option as deprecated
* support for DateTimeInterface and DateTimeImmutable where possible
* use TRUSTED_PROXIES setting - fixes #4533
* re-enable Kimai test in docker test build script (#4541)
* bump dependencies

src/Twig/LocaleFormatExtensions.php

@@ -62,10 +62,10 @@ final class LocaleFormatExtensions extends AbstractExtension implements LocaleAw
         return [
             new TwigTest('weekend', [$this, 'isWeekend']),
             new TwigTest('today', function ($dateTime): bool {
-                if (!$dateTime instanceof \DateTime) {
+                if (!$dateTime instanceof \DateTimeInterface) {
                     return false;
                 }
-                $compare = new \DateTime('now', $dateTime->getTimezone());
+                $compare = new \DateTimeImmutable('now', $dateTime->getTimezone());
 
                 return $compare->format('Y-m-d') === $dateTime->format('Y-m-d');
             }),