chore(deps-dev): bump vitest in /templates/mle-ts-sample

Bumps [vitest](https://github.com/vitest-dev/vitest/tree/HEAD/packages/vitest) from 3.2.4 to 4.0.18.
- [Release notes](https://github.com/vitest-dev/vitest/releases)
- [Commits](https://github.com/vitest-dev/vitest/commits/v4.0.18/packages/vitest)

---
updated-dependencies:
- dependency-name: vitest
  dependency-version: 4.0.18
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

templates/mle-ts-sample/package.json

@@ -6,7 +6,7 @@
         "typescript": "^5.7.3",
         "esbuild": "0.25.1",
         "oracledb": "^6.7.1",
-        "vitest": "^3.1.2",
+        "vitest": "^4.0.18",
         "dotenv": "^16.5.0"
     },
     "scripts": {