fix: use internal repo

Author: Marlinc

composer.json

@@ -24,7 +24,12 @@
         "phpstan/phpstan": "^2.0",
         "friendsofphp/php-cs-fixer": "^3.71"
     },
-    "minimum-stability": "stable",
+    "repositories": [
+        {
+            "type": "git",
+            "url": "git@gitlab.cloudbear.it:cbws/core/protobufs.git"
+        }
+    ],
     "autoload": {
         "psr-4": {
             "Cbws\\Sdk\\": "src"