Bump react from 19.1.0 to 19.2.1 in /ruby-gem/spec/dummy

Bumps [react](https://github.com/facebook/react/tree/HEAD/packages/react) from 19.1.0 to 19.2.1.
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v19.2.1/packages/react)

---
updated-dependencies:
- dependency-name: react
  dependency-version: 19.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

ruby-gem/spec/dummy/package.json

@@ -41,7 +41,7 @@
     "prop-types": "^15.8.1",
     "prop-types-exact": "^1.2.7",
     "rails-erb-loader": "^5.5.2",
-    "react": "^19.1.0",
+    "react": "^19.2.1",
     "react-dom": "^19.1.0",
     "react-native-safe-area-context": "^5.6.2",
     "react-native-web": "^0.21.2",

ruby-gem/spec/dummy/yarn.lock

@@ -3834,10 +3834,10 @@ react-native-web@^0.21.2:
     postcss-value-parser "^4.2.0"
     styleq "^0.1.3"
 
-react@^19.1.0:
-  version "19.1.0"
-  resolved "https://registry.yarnpkg.com/react/-/react-19.1.0.tgz#926864b6c48da7627f004795d6cce50e90793b75"
-  integrity sha512-FS+XFBNvn3GTAWq26joslQgWNoFu08F4kl0J4CgdNKADkdSGXQyTCnKteIAJy96Br6YbpEU1LSzV5dYtjMkMDg==
+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==
 
 readable-stream@^2.0.1:
   version "2.3.7"