Bump @openzeppelin/contracts in /ethereum/smart-contract

Bumps [@openzeppelin/contracts](https://github.com/OpenZeppelin/openzeppelin-contracts) from 4.8.0 to 4.8.2.
- [Release notes](https://github.com/OpenZeppelin/openzeppelin-contracts/releases)
- [Changelog](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/CHANGELOG.md)
- [Commits](OpenZeppelin/openzeppelin-contracts@v4.8.0...v4.8.2)

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

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

Author: dependabot[bot]

ethereum/smart-contract/package.json

@@ -22,7 +22,7 @@
     "@nomiclabs/hardhat-ethers": "^2.2.1",
     "@nomiclabs/hardhat-etherscan": "^3.1.6",
     "@nomiclabs/hardhat-solhint": "^3.0.0",
-    "@openzeppelin/contracts": "^4.8.0",
+    "@openzeppelin/contracts": "^4.8.2",
     "@openzeppelin/hardhat-upgrades": "^1.22.1",
     "@openzeppelin/test-environment": "^0.1.9",
     "@openzeppelin/test-helpers": "^0.5.11",