Bump ethers from 6.14.4 to 6.15.0 in the blockchain group

Bumps the blockchain group with 1 update: [ethers](https://github.com/ethers-io/ethers.js).


Updates `ethers` from 6.14.4 to 6.15.0
- [Release notes](https://github.com/ethers-io/ethers.js/releases)
- [Changelog](https://github.com/ethers-io/ethers.js/blob/main/CHANGELOG.md)
- [Commits](ethers-io/ethers.js@v6.14.4...v6.15.0)

---
updated-dependencies:
- dependency-name: ethers
  dependency-version: 6.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: blockchain
...

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

Author: dependabot[bot]

package-lock.json

@@ -66,7 +66,7 @@
     "bignumber.js": "^9.3.0",
     "clipboard": "^2.0.11",
     "dotenv": "^16.6.1",
-    "ethers": "^6.14.4",
+    "ethers": "^6.15.0",
     "focus-trap-react": "^11.0.4",
     "github-slugger": "^2.0.0",
     "graphql": "^16.11.0",