Bump @nomiclabs/hardhat-etherscan from 3.1.4 to 3.1.5 (#113)

Bumps [@nomiclabs/hardhat-etherscan](https://github.com/nomiclabs/hardhat) from 3.1.4 to 3.1.5.
- [Release notes](https://github.com/nomiclabs/hardhat/releases)
- [Commits](https://github.com/nomiclabs/hardhat/compare/@nomiclabs/hardhat-etherscan@3.1.4...@nomiclabs/hardhat-etherscan@3.1.5)

---
updated-dependencies:
- dependency-name: "@nomiclabs/hardhat-etherscan"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package-lock.json

@@ -21,7 +21,7 @@
     "@nomicfoundation/hardhat-network-helpers": "^1.0.7",
     "@nomicfoundation/hardhat-toolbox": "^1.0.1",
     "@nomiclabs/hardhat-ethers": "^2.2.1",
-    "@nomiclabs/hardhat-etherscan": "^3.1.4",
+    "@nomiclabs/hardhat-etherscan": "^3.1.5",
     "@openzeppelin/contracts": "^4.7.3",
     "@typechain/ethers-v5": "^10.2.0",
     "@typechain/hardhat": "^6.1.5",