Incorporated pnpm overrides statement to override axios to newer version than...

Incorporated pnpm overrides statement to override axios to newer version than referenced by KeychainSDK and thus satisfy dependabot vulnerability complaints

examples/ts/signature-extension/package.json

@@ -24,5 +24,10 @@
     "stream-browserify": "^3.0.0",
     "string_decoder": "^1.3.0"
   },
+  "pnpm": {
+    "overrides": {
+       "axios": "^1.8.4"
+    }
+  },
   "packageManager": "pnpm@10.0.0+sha512.b8fef5494bd3fe4cbd4edabd0745df2ee5be3e4b0b8b08fa643aa3e4c6702ccc0f00d68fa8a8c9858a735a0032485a44990ed2810526c875e416f001b17df12b"
 }