Update dependency react to v19

Author: renovate[bot]

packages/helpers-gatsby/package.json

@@ -34,7 +34,7 @@
     "@babel/preset-react": "7.28.5",
     "c8": "10.1.3",
     "mocha": "11.7.5",
-    "react": "18.3.1",
+    "react": "19.2.1",
     "rimraf": "6.1.2",
     "should": "13.2.3",
     "sinon": "21.0.0"
@@ -46,6 +46,6 @@
     "prop-types": "^15.6.2"
   },
   "peerDependencies": {
-    "react": "^18.1.0"
+    "react": "^18.1.0 || ^19.0.0"
   }
 }

yarn.lock

@@ -8624,7 +8624,7 @@ longest-streak@^2.0.1:
   resolved "https://registry.yarnpkg.com/longest-streak/-/longest-streak-2.0.4.tgz#b8599957da5b5dab64dee3fe316fa774597d90e4"
   integrity sha512-vM6rUVCVUJJt33bnmHiZEvr7wPT78ztX7rojL+LW51bHtLh6HTjx84LA5W4+oa6aKEJA7jJu5LR6vQRBpA5DVg==
 
-loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.4.0:
+loose-envify@^1.0.0, loose-envify@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.4.0.tgz#71ee51fa7be4caec1a63839f7e682d8132d30caf"
   integrity sha512-lyuxPGr/Wfhrlem2CL/UcnUc1zcqKAImBDzukY7Y5F/yQiNdko6+fRLevlw1HgMySw7f611UIY408EtxRSoK3Q==
@@ -10392,12 +10392,10 @@ react-lifecycles-compat@^3.0.4:
   resolved "https://registry.yarnpkg.com/react-lifecycles-compat/-/react-lifecycles-compat-3.0.4.tgz#4f1a273afdfc8f3488a8c516bfda78f872352362"
   integrity sha512-fBASbA6LnOU9dOU2eW7aQ8xmYBSXUIWr+UmF9b1efZBazGNO+rcXT/icdKnYm2pTwcRylVUYwW7H1PHfLekVzA==
 
-react@18.3.1:
-  version "18.3.1"
-  resolved "https://registry.yarnpkg.com/react/-/react-18.3.1.tgz#49ab892009c53933625bd16b2533fc754cab2891"
-  integrity sha512-wS+hAgJShR0KhEvPJArfuPVN1+Hz1t0Y6n5jLrGQbkb4urgPE/0Rve+1kMB1v/oWgHgm4WIcV+i7F2pTVj+2iQ==
-  dependencies:
-    loose-envify "^1.1.0"
+react@19.2.1:
+  version "19.2.1"
+  resolved "https://registry.yarnpkg.com/react/-/react-19.2.1.tgz#8600fa205e58e2e807f6ef431c9f6492591a2700"
+  integrity sha512-DGrYcCWK7tvYMnWh79yrPHt+vdx9tY+1gPZa7nJQtO/p8bLTDaHp4dzwEhQB7pZ4Xe3ok4XKuEPrVuc+wlpkmw==
 
 read-cmd-shim@3.0.0:
   version "3.0.0"