Yii Request Body Parser 1.2

Yii Request Body Parser version 1.2 was released. In this version:

• Bump minimum PHP version to 8.1
• Change PHP constraint in composer.json to 8.1 - 8.4
• Add psalm type int<1, 2147483647> to depth parameter in JsonParser constructor
• Use promoted readonly properties in JsonParser, BadRequestHandler and RequestBodyParser classes
• Minor refactor RequestBodyParser: use str_contains() function instead of strpos() and ::class instead of get_class()
• Explicitly mark nullable parameters
• Explicitly add transitive dependency psr/http-factory