Bump hardhat from 2.7.1 to 2.17.1 in /examples/hardhat

Bumps [hardhat](https://github.com/nomiclabs/hardhat) from 2.7.1 to 2.17.1.
- [Release notes](https://github.com/nomiclabs/hardhat/releases)
- [Commits](https://github.com/nomiclabs/hardhat/compare/hardhat@2.7.1...hardhat@2.17.1)

---
updated-dependencies:
- dependency-name: hardhat
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

examples/hardhat/package.json

@@ -19,7 +19,7 @@
   },
   "homepage": "https://github.com/gnosis/ethcontract-rs",
   "devDependencies": {
-    "hardhat": "^2.7.1",
+    "hardhat": "^2.17.1",
     "hardhat-deploy": "^0.9.14"
   }
 }