chore(deps): bump @emurgo/cardano-serialization-lib-nodejs in /server

Bumps [@emurgo/cardano-serialization-lib-nodejs](https://github.com/Emurgo/cardano-serialization-lib) from 11.5.0 to 12.1.0.
- [Release notes](https://github.com/Emurgo/cardano-serialization-lib/releases)
- [Commits](Emurgo/cardano-serialization-lib@11.5.0...12.1.0)

---
updated-dependencies:
- dependency-name: "@emurgo/cardano-serialization-lib-nodejs"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

server/package.json

@@ -21,7 +21,7 @@
   "proxy": "http://localhost:3000",
   "keywords": [],
   "dependencies": {
-    "@emurgo/cardano-serialization-lib-nodejs": "^11.5.0",
+    "@emurgo/cardano-serialization-lib-nodejs": "^12.1.0",
     "@reqlez/express-openapi": "^2.1.2",
     "@types/validator": "^13.12.1",
     "axios": "^1.7.7",