chore(deps): bump bn.js from 4.12.2 to 4.12.3

Bumps [bn.js](https://github.com/indutny/bn.js) from 4.12.2 to 4.12.3.
- [Release notes](https://github.com/indutny/bn.js/releases)
- [Changelog](https://github.com/indutny/bn.js/blob/master/CHANGELOG.md)
- [Commits](indutny/bn.js@v4.12.2...v4.12.3)

---
updated-dependencies:
- dependency-name: bn.js
  dependency-version: 4.12.3
  dependency-type: indirect
...

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

Author: dependabot[bot]

yarn.lock

@@ -3322,9 +3322,9 @@ __metadata:
   linkType: hard
 
 "bn.js@npm:^4.11.9":
-  version: 4.12.2
-  resolution: "bn.js@npm:4.12.2"
-  checksum: dd224afda6f5a7d15f2fe5154e1a1c245576a725584ea1852c8c42f9748dfe847bc63a48b2885360023389a24cfebb3653ca97f4c69742f3c22bc63da6565030
+  version: 4.12.3
+  resolution: "bn.js@npm:4.12.3"
+  checksum: 0fb6455c6d56e3869589ad736cc2f5ed2b6229daa1af43e93bd373eb5e20bf0ae25b166087189bce9ba3b3f4d971e1b9a12ec6027e52eb182e5535e1494cadbb
   languageName: node
   linkType: hard