Bump hardhat from 2.11.2 to 2.12.0 (#24)

Bumps [hardhat](https://github.com/nomiclabs/hardhat) from 2.11.2 to 2.12.0.
- [Release notes](https://github.com/nomiclabs/hardhat/releases)
- [Commits](https://github.com/nomiclabs/hardhat/compare/hardhat@2.11.2...hardhat@2.12.0)

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

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -16,7 +16,7 @@
   "devDependencies": {
     "@shardlabs/starknet-hardhat-plugin": "^0.6.7",
     "@types/mocha": "^9.1.1",
-    "hardhat": "^2.11.1",
+    "hardhat": "^2.12.0",
     "mocha": "^10.0.0",
     "ts-node": "^10.9.1",
     "typescript": "^4.8.4"