move minimum php version to 8.2 for master, allow newer psalm variants

composer.json

@@ -22,7 +22,7 @@
         "psalm": "@php ./vendor/bin/psalm.phar --no-cache --show-info=false "
     },
     "require": {
-        "php": ">=7.4",
+        "php": ">=8.2",
         "smarty/smarty": "^3|^4",
         "postfixadmin/password-hashing": "^0.0.2",
         "endroid/qr-code": "^4.6 | ^5.0", 
@@ -35,7 +35,7 @@
         "php-parallel-lint/php-parallel-lint": "^1.0",
         "php-coveralls/php-coveralls": "*",
         "phpunit/phpunit": "8.*|9.*",
-        "psalm/phar":"^4.0"
+        "psalm/phar":"^4.0|^5.0|^6.0"
     },
     "suggest" : {
         "ext-mysqli":  "*",