Bump @nestia/core in /packages/fake-toss-payments-server

Bumps [@nestia/core](https://github.com/samchon/nestia) from 2.6.4 to 3.0.1.
- [Release notes](https://github.com/samchon/nestia/releases)
- [Commits](samchon/nestia@v2.6.4...v3.0.1)

---
updated-dependencies:
- dependency-name: "@nestia/core"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

packages/fake-toss-payments-server/package.json

@@ -59,7 +59,7 @@
     "typescript-transform-paths": "^3.4.6"
   },
   "dependencies": {
-    "@nestia/core": "^2.6.2",
+    "@nestia/core": "^3.0.1",
     "@nestia/fetcher": "^2.6.2",
     "@nestjs/common": "^10.2.8",
     "@nestjs/core": "^10.2.8",