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

composer.json

@@ -43,7 +43,7 @@
         "onelogin/php-saml": "^4.0",
         "pagerfanta/pagerfanta": "^3.0",
         "phpoffice/phpspreadsheet": "^1.16",
-        "phpoffice/phpword": "1.1.*",
+        "phpoffice/phpword": "^1.0",
         "psr/container": "^2.0",
         "psr/log": "^3.0",
         "scheb/2fa-backup-code": "^6.2",