ci: Fix PHPCompatibility again (#2892)
ci: Fix PHPCompatibility again (#2892)

The fix in 66568e3a39c61546c09a47a5688914a0bdf3c60c prevented an error
when installing phpcompatibility/php-compatibility but there was still
a warning before that when installing dealerdirect/phpcodesniffer-composer-installer.
With Composer 2.3.9, this is now an error too, so we need to move
the config change before that: https://getcomposer.org/changelog/2.3.9
Riduidel/rss-bridge,RSS-Bridge/rss-bridge,RSS-Bridge/rss-bridge,RSS-Bridge/rss-bridge,ORelio/rss-bridge,Riduidel/rss-bridge,Riduidel/rss-bridge,ORelio/rss-bridge,ORelio/rss-bridge