build(deps): bump @polkadot/keyring from 12.3.2 to 12.4.1 (#571)

Bumps [@polkadot/keyring](https://github.com/polkadot-js/common/tree/HEAD/packages/keyring) from 12.3.2 to 12.4.1.
- [Release notes](https://github.com/polkadot-js/common/releases)
- [Changelog](https://github.com/polkadot-js/common/blob/master/CHANGELOG.md)
- [Commits](https://github.com/polkadot-js/common/commits/v12.4.1/packages/keyring)

---
updated-dependencies:
- dependency-name: "@polkadot/keyring"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

package.json

@@ -15,7 +15,7 @@
   },
   "dependencies": {
     "@polkadot/api": "^10.9.1",
-    "@polkadot/keyring": "^12.3.2",
+    "@polkadot/keyring": "^12.4.1",
     "@polkadot/util": "^12.4.1",
     "@polkadot/util-crypto": "^12.3.2",
     "@sentry/integrations": "^7.64.0",