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

.docker/test-lite.sh

@@ -1,6 +1,9 @@
 #!/bin/sh -e
 
-# Test PHP/Kimai
+if [ -z "$DATABASE_URL" ]; then
+  DATABASE_URL="mysql://kimai:kimai@127.0.0.1:3306/kimai?charset=utf8mb4&serverVersion=5.7.40"
+fi
+
 /opt/kimai/bin/console kimai:version
 if [ $? != 0 ]; then
   echo "PHP/Kimai not responding"