Bump @hashgraph/sdk from 2.42.0 to 2.43.0 (#119)

Bumps [@hashgraph/sdk](https://github.com/hashgraph/hedera-sdk-js) from 2.42.0 to 2.43.0.
- [Release notes](https://github.com/hashgraph/hedera-sdk-js/releases)
- [Changelog](https://github.com/hashgraph/hedera-sdk-js/blob/develop/CHANGELOG.md)
- [Commits](hiero-ledger/hiero-sdk-js@v2.42.0...v2.43.0)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -24,7 +24,7 @@
   "dependencies": {
     "@actions/core": "^1.10.1",
     "@actions/github": "^6.0.0",
-    "@hashgraph/sdk": "^2.42.0"
+    "@hashgraph/sdk": "^2.43.0"
   },
   "devDependencies": {
     "prettier": "3.2.5"