build(deps-dev): bump @polkadot/api from 15.0.1 to 15.3.1 in /js

Bumps [@polkadot/api](https://github.com/polkadot-js/api/tree/HEAD/packages/api) from 15.0.1 to 15.3.1.
- [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/v15.3.1/packages/api)

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

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

js/package.json

@@ -43,7 +43,7 @@
   },
   "devDependencies": {
     "@gear-js/api": "0.40.0",
-    "@polkadot/api": "15.0.1",
+    "@polkadot/api": "15.3.1",
     "@polkadot/types": "15.0.1",
     "jest": "^29.7.0"
   },