chore(deps): bump lodash and @bitgo/unspents

Bumps [lodash](https://github.com/lodash/lodash) to 4.18.1 and updates ancestor dependency [@bitgo/unspents](https://github.com/BitGo/BitGoJS/tree/HEAD/modules/unspents). These dependencies need to be updated together.


Updates `lodash` from 4.17.21 to 4.18.1
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.21...4.18.1)

Updates `@bitgo/unspents` from 0.50.14 to 0.51.3
- [Release notes](https://github.com/BitGo/BitGoJS/releases)
- [Changelog](https://github.com/BitGo/BitGoJS/blob/master/modules/unspents/CHANGELOG.md)
- [Commits](https://github.com/BitGo/BitGoJS/commits/@bitgo/unspents@0.51.3/modules/unspents)

---
updated-dependencies:
- dependency-name: lodash
  dependency-version: 4.18.1
  dependency-type: indirect
- dependency-name: "@bitgo/unspents"
  dependency-version: 0.51.3
  dependency-type: direct:development
...

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

Author: dependabot[bot]

package-lock.json

@@ -87,7 +87,7 @@
     "lint:fix": "npm run lint:prettier:fix && npm run lint:eslint:fix && npm run lint:rustfmt:fix"
   },
   "devDependencies": {
-    "@bitgo/unspents": "^0.50.13",
+    "@bitgo/unspents": "^0.51.3",
     "@bitgo/utxo-lib": "^10.1.0",
     "@eslint/js": "^9.17.0",
     "@types/mocha": "^10.0.7",