[react] Mark prop-types as direct dependency (#330)

Co-authored-by: Brijesh Bittu <[email protected]>

Author: brijeshb42

packages/pigment-css-react/package.json

@@ -50,6 +50,7 @@
     "cssesc": "^3.0.0",
     "csstype": "^3.1.3",
     "lodash": "^4.17.21",
+    "prop-types": "^15.8.1",
     "stylis": "^4.3.4",
     "stylis-plugin-rtl": "^2.1.1"
   },
@@ -69,7 +70,6 @@
     "@types/stylis": "^4.2.5",
     "chai": "^4.4.1",
     "prettier": "^3.2.5",
-    "prop-types": "^15.8.1",
     "react": "^18.3.1"
   },
   "peerDependencies": {