Update drupol/phpermutations dependency for php8 compatibility

- try key

Author: DomBra27

composer.json

@@ -12,20 +12,15 @@
     "php": ">=8",
     "drupol/phpermutations": "1.5.0"
   },
-  "repositories": [
-    {
+  "repositories": {
+    "drupol/phpermutations": {
       "type": "vcs",
       "url": "https://github.com/integer-net/phpermutations.git",
       "only": [
         "drupol/phpermutations"
       ]
-    },
-    {
-      "type": "composer",
-      "url": "https://packagist.org",
-      "exclude": ["drupol/phpermutations"]
     }
-  ],
+  },
   "autoload": {
     "psr-4": {
       "EnzoMC\\PhpFPGrowth\\": "src/"