[chore] upgrade to php 8.3 (#209)

* wip

* Update AppStoreJwsVerifier.php

* Update ci.yml

* Update ci.yml

* wip

* Update InvalidReceiptException.php

* wip

* Update ServerNotification.php

* Update AppStoreJwsVerifier.php

* Update makefile

* wip

* Update composer.json

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update composer.lock

* wip

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: imdhemy

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ jobs:
     strategy:
       matrix:
         operating-system: [ ubuntu-latest, windows-latest, macos-latest ]
-        php-version: [ 8.1, 8.3 ]
+        php-version: [ 8.3 ]
     steps:
 
       # --------- Setup steps ---------

Dockerfile

@@ -1,4 +1,4 @@
-FROM php:8.1-fpm
+FROM php:8.3-fpm
 
 # Install dependencies
 RUN apt-get update && apt-get install -y \

composer.json

@@ -9,7 +9,7 @@
     }
   ],
   "require": {
-    "php": ">=8.1",
+    "php": ">=8.3",
     "ext-json": "*",
     "ext-openssl": "*",
     "ext-sodium": "*",
@@ -52,7 +52,7 @@
     "sort-packages": true,
     "allow-plugins": {},
     "platform": {
-      "php": "8.1"
+      "php": "8.3"
     }
   }
 }