Bump typescript from 3.9.3 to 5.2.2 in /examples/contract-erc20

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.9.3 to 5.2.2.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v3.9.3...v5.2.2)

---
updated-dependencies:
- dependency-name: typescript
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

examples/contract-erc20/package.json

@@ -5,7 +5,7 @@
     "@polkadot/api": "^1.16.0-beta.2",
     "@polkadot/util-crypto": "^2.10.1",
     "ts-node": "^8.10.1",
-    "typescript": "^3.9.3",
+    "typescript": "^5.2.2",
     "web3x": "^4.0.6"
   }
 }