fix: Update branch alias version in composer.json from 0.3.x-dev to 0.4.x-dev. (#70)

Author: terabytesoftw

composer.json

@@ -32,7 +32,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-main": "0.3.x-dev"
+            "dev-main": "0.4.x-dev"
         },
 		"phpstan": {
 			"includes": [