[Composer] Require php-http/message-factory package

[GSadee]

Q	A
Branch?	1.3
Bug fix?	yes
New feature?	no
Related tickets

This dependency was provided up to version 1.15.0 by php-http/message, but the latest version no longer provides it, although Sylius 1.11 still needs it. It will be possible to drop this dependency once support for Sylius 1.11 will have been removed.

[jakubtobiasz]

Thank you, @GSadee!