chore(deps): bump @openzeppelin/contracts from 4.3.2 to 4.9.3

Bumps [@openzeppelin/contracts](https://github.com/OpenZeppelin/openzeppelin-contracts) from 4.3.2 to 4.9.3.
- [Release notes](https://github.com/OpenZeppelin/openzeppelin-contracts/releases)
- [Changelog](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.9.3/CHANGELOG.md)
- [Commits](OpenZeppelin/openzeppelin-contracts@v4.3.2...v4.9.3)

---
updated-dependencies:
- dependency-name: "@openzeppelin/contracts"
  dependency-type: direct:production
...

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

package.json

@@ -21,7 +21,7 @@
   "dependencies": {
     "@nomiclabs/hardhat-etherscan": "^3.1.7",
     "@nomiclabs/hardhat-waffle": "^2.0.1",
-    "@openzeppelin/contracts": "^4.3.2",
+    "@openzeppelin/contracts": "^4.9.3",
     "@openzeppelin/contracts-upgradeable": "^4.3.2",
     "docopt": "^0.6.2",
     "dotenv": "^10.0.0",