Bump solc from 0.8.21 to 0.8.23

Bumps [solc](https://github.com/ethereum/solc-js) from 0.8.21 to 0.8.23.
- [Commits](ethereum/solc-js@v0.8.21...v0.8.23)

---
updated-dependencies:
- dependency-name: solc
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

package.json

@@ -36,7 +36,7 @@
     "@kleros/erc-792": "^8.0.0",
     "@openzeppelin/test-helpers": "^0.5.7",
     "ganache-cli": "^6.12.0",
-    "solc": "0.8.21",
+    "solc": "0.8.23",
     "solhint": "^3.2.1",
     "solidity-docgen": "^0.5.7",
     "truffle": "^5.1.48",