chore(deps): bump @polkadot/api from 3.10.2 to 3.11.1 (#398)

Bumps [@polkadot/api](https://github.com/polkadot-js/api) from 3.10.2 to 3.11.1.
- [Release notes](https://github.com/polkadot-js/api/releases)
- [Changelog](https://github.com/polkadot-js/api/blob/master/CHANGELOG.md)
- [Commits](https://github.com/polkadot-js/api/compare/v3.10.2...v3.11.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

package.json

@@ -20,7 +20,7 @@
     "test": "jest"
   },
   "dependencies": {
-    "@polkadot/api": "3.10.2",
+    "@polkadot/api": "3.11.1",
     "memoizee": "^0.4.14"
   },
   "devDependencies": {