Set "composer/composer" dependency to "require" index

Signed-off-by: Felipe Sayão Lobato Abreu <github@mentordosnerds.com>

Author: coisa

composer.json

@@ -26,6 +26,7 @@
     "require": {
         "php": "^8.3",
         "composer-plugin-api": "^2.0",
+        "composer/composer": "^2.9",
         "ergebnis/composer-normalize": "^2.50",
         "ergebnis/rector-rules": "^1.14",
         "esi/phpunit-coverage-check": "^3.0",
@@ -40,9 +41,6 @@
         "symplify/easy-coding-standard": "^13.0",
         "thecodingmachine/safe": "^3.4"
     },
-    "require-dev": {
-        "composer/composer": "^2.9"
-    },
     "minimum-stability": "stable",
     "autoload": {
         "psr-4": {