fix: upgrade @stellar/stellar-base from 12.0.1 to 12.1.0

Snyk has created this PR to upgrade @stellar/stellar-base from 12.0.1 to 12.1.0.

See this package in npm:
@stellar/stellar-base

See this project in Snyk:
https://app.snyk.io/org/okeamah/project/16fbcc40-a0ac-4eb6-857a-38a6bbcd677a?utm_source=github&utm_medium=referral&page=upgrade-pr

rest-api/package.json

@@ -29,7 +29,7 @@
     "@nestjs/platform-express": "^10.3.3",
     "@nestjs/swagger": "^7.3.0",
     "@solana/web3.js": "^1.90.2",
-    "@stellar/stellar-base": "12.0.1",
+    "@stellar/stellar-base": "12.1.0",
     "@stellar/stellar-sdk": "12.1.0",
     "@types/big.js": "^6.2.2",
     "big.js": "^6.2.1",