Add Yarn config and Dependabot entry for token-refresh sample

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ksroda-sa

.github/dependabot.yml

@@ -10,6 +10,16 @@ updates:
     commit-message:
       prefix: "deps"
 
+  - package-ecosystem: "npm"
+    directory: "/samples/react/token-refresh"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 5
+    labels:
+      - "dependencies"
+    commit-message:
+      prefix: "deps"
+
   - package-ecosystem: "npm"
     directory: "/scripts"
     schedule:

samples/react/token-refresh/.yarn/releases/yarn-4.13.0.cjs

@@ -0,0 +1,7 @@
+defaultSemverRangePrefix: ""
+
+nodeLinker: node-modules
+
+npmRegistryServer: "https://registry.npmjs.org"
+
+yarnPath: .yarn/releases/yarn-4.13.0.cjs