fix(deps): update react monorepo to v19.2.6

Author: renovate[bot]

frontend/package.json

@@ -22,9 +22,9 @@
         "js-cookie": "3.0.5",
         "jwt-decode": "4.0.0",
         "lodash": "4.18.1",
-        "react": "19.2.5",
+        "react": "19.2.6",
         "react-currency-format": "1.1.0",
-        "react-dom": "19.2.5",
+        "react-dom": "19.2.6",
         "react-markdown": "10.1.0",
         "react-modal": "3.16.3",
         "react-redux": "9.2.0",