Bump @polkadot/keyring from 12.6.1 to 13.4.4

Bumps [@polkadot/keyring](https://github.com/polkadot-js/common/tree/HEAD/packages/keyring) from 12.6.1 to 13.4.4.
- [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/v13.4.4/packages/keyring)

---
updated-dependencies:
- dependency-name: "@polkadot/keyring"
  dependency-version: 13.4.4
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package.json

@@ -27,7 +27,7 @@
   },
   "dependencies": {
     "@polkadot/api": "^10.9.1",
-    "@polkadot/keyring": "^12.4.2",
+    "@polkadot/keyring": "^13.4.4",
     "@polkadot/util": "^12.4.2",
     "@polkadot/util-crypto": "^12.4.2",
     "lodash": "^4.17.21",