fix dependency versions

Author: roncodes

composer.json

@@ -56,8 +56,8 @@
         "spatie/laravel-sluggable": "^3.5",
         "sqids/sqids": "^0.4.1",
         "xantios/mimey": "^2.2.0",
-        "spatie/laravel-pdf": "^2.0",
-        "mossadal/math-parser": "^2.0"
+        "spatie/laravel-pdf": "^1.9",
+        "mossadal/math-parser": "^1.3"
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.34.1",