Allow psr/http-message 2.0

[simonschaufi]

Feature Request

Is your feature request related to a problem? Please describe.
I'm running TYPO3 12 which requires psr/http-message 2.0. In order for this extension to be installed, I had to downgrade psr/http-message to 1.1

Describe the solution you'd like
Allow psr/http-message 2.0 as well

Additional context

composer req t3g/blog:12.0.2 -W
./composer.json has been updated
Running composer update t3g/blog --with-all-dependencies
Loading composer repositories with package information                                                                                                                                                                                                                                    Updating dependencies                                 
Lock file operations: 0 installs, 4 updates, 0 removals
  - Downgrading psr/http-message (2.0 => 1.1)
  - Upgrading t3g/blog (1.0.0 => 12.0.2)