chore(deps-dev): bump hardhat from 2.9.7 to 2.9.9

Bumps [hardhat](https://github.com/nomiclabs/hardhat) from 2.9.7 to 2.9.9.
- [Release notes](https://github.com/nomiclabs/hardhat/releases)
- [Commits](https://github.com/nomiclabs/hardhat/compare/[email protected]@2.9.9)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

contracts/package.json

@@ -39,7 +39,7 @@
     "ethereumjs-util": "^7.1.4",
     "ethers": "^5.6.7",
     "follow-redirects": "^1.15.0",
-    "hardhat": "^2.9.6",
+    "hardhat": "^2.9.9",
     "hardhat-contract-sizer": "^2.5.1",
     "hardhat-deploy": "^0.11.10",
     "hardhat-deploy-ethers": "^0.3.0-beta.13",