chore: lion/mailer dependencies removed

Author: Sleon4

composer.json

@@ -57,7 +57,6 @@
         "lion/exceptions": "^1.3",
         "lion/files": "^7.1",
         "lion/helpers": "^4.0",
-        "lion/mailer": "^6.3",
         "lion/request": "^6.9",
         "lion/route": "^11.5",
         "lion/security": "^10.0",
@@ -70,10 +69,8 @@
     },
     "require-dev": {
         "lion/test": "^2.1",
-        "phpmailer/phpmailer": "^6.9",
         "phpunit/phpunit": "^11.4",
-        "robiningelbrecht/phpunit-pretty-print": "^1.3",
-        "symfony/mailer": "^7.1"
+        "robiningelbrecht/phpunit-pretty-print": "^1.3"
     },
     "suggest": {
         "ext-gd": "Required to use LionSpreadsheet.",