Bump @openzeppelin/contracts from 4.5.0 to 4.9.3

Bumps [@openzeppelin/contracts](https://github.com/OpenZeppelin/openzeppelin-contracts) from 4.5.0 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@v4.5.0...v4.9.3)

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

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

package.json

@@ -35,7 +35,7 @@
   "homepage": "https://github.com/thehubbleproject/hubble-contracts",
   "devDependencies": {
     "@nomiclabs/hardhat-ethers": "^2.0.2",
-    "@openzeppelin/contracts": "^4.5.0",
+    "@openzeppelin/contracts": "^4.9.3",
     "@typechain/ethers-v5": "^9.0.0",
     "@types/chai": "^4.2.19",
     "@types/chai-as-promised": "^7.1.4",