fix: examples/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-ELLIPTIC-7577916
- https://snyk.io/vuln/SNYK-JS-ELLIPTIC-7577917
- https://snyk.io/vuln/SNYK-JS-ELLIPTIC-7577918

examples/package.json

@@ -62,10 +62,10 @@
   "dependencies": {
     "@allbridge/bridge-core-sdk": "file:..",
     "@solana/web3.js": "^1.78.5",
-    "tronweb": "^4.4.0",
-    "web3": "^1.9.0",
-    "web3-core": "^1.9.0",
-    "web3-eth-contract": "^1.9.0",
+    "tronweb": "^5.3.0",
+    "web3": "^4.0.1",
+    "web3-core": "^4.0.1",
+    "web3-eth-contract": "^4.0.1",
     "web3-utils": "^1.9.0"
   },
   "devDependencies": {