chore(deps): bump bn.js from 4.12.0 to 4.12.1

Bumps [bn.js](https://github.com/indutny/bn.js) from 4.12.0 to 4.12.1.
- [Release notes](https://github.com/indutny/bn.js/releases)
- [Changelog](https://github.com/indutny/bn.js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/indutny/bn.js/commits)

---
updated-dependencies:
- dependency-name: bn.js
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

package.json

@@ -64,7 +64,7 @@
     "@polkadot/api": "10.9.1",
     "big.js": "6.1.1",
     "bitcoinjs-lib": "^5.2.0",
-    "bn.js": "4.12.0",
+    "bn.js": "4.12.1",
     "cross-fetch": "^4.0.0",
     "yargs": "^17.5.1"
   },
@@ -94,7 +94,7 @@
     "typescript": "5.6.2"
   },
   "resolutions": {
-    "bn.js": "4.12.0"
+    "bn.js": "4.12.1"
   },
   "files": [
     "build",