chore(deps): bump @polkadot/api from 10.9.1 to 10.11.1

Bumps [@polkadot/api](https://github.com/polkadot-js/api/tree/HEAD/packages/api) from 10.9.1 to 10.11.1.
- [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/commits/v10.11.1/packages/api)

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

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

package.json

@@ -60,7 +60,7 @@
   "dependencies": {
     "@interlay/esplora-btc-api": "1.3.0",
     "@interlay/monetary-js": "0.7.3",
-    "@polkadot/api": "10.9.1",
+    "@polkadot/api": "10.11.1",
     "big.js": "6.1.1",
     "bitcoinjs-lib": "^5.2.0",
     "bn.js": "4.12.0",