add php 8.3 (#16)

* add php 8.3

* update composer.json

Author: miladrahimi

.github/workflows/ci.yml

@@ -9,6 +9,7 @@ jobs:
           - php: '8.0'
           - php: '8.1'
           - php: '8.2'
+          - php: '8.3'
     runs-on: ubuntu-latest
     steps:
       - name: Checkout

composer.json

@@ -17,7 +17,8 @@
   "authors": [
     {
       "name": "Milad Rahimi",
-      "email": "[email protected]"
+      "email": "[email protected]",
+      "homepage": "https://miladrahimi.com"
     }
   ],
   "require": {
@@ -29,7 +30,7 @@
     "phpunit/phpunit": "^7|^8|^9"
   },
   "suggest": {
-    "ext-sodium": "Optional description of what this extension provides."
+    "ext-sodium": "Sodium extension is required for EdDSA algortihms"
   },
   "autoload": {
     "psr-4": {