PHP: Updated min version to 8.2

PHPStan config not yet compatible, but should work after moving to Laravel
11, which would allow using larastan 3.x.

composer.json

@@ -8,7 +8,7 @@
     "license": "MIT",
     "type": "project",
     "require": {
-        "php": "^8.1.0",
+        "php": "^8.2.0",
         "ext-curl": "*",
         "ext-dom": "*",
         "ext-fileinfo": "*",
@@ -104,7 +104,7 @@
         "preferred-install": "dist",
         "sort-packages": true,
         "platform": {
-            "php": "8.1.0"
+            "php": "8.2.0"
         }
     },
     "extra": {