Bump typescript from 5.9.2 to 5.9.3

Bumps [typescript](https://github.com/microsoft/TypeScript) from 5.9.2 to 5.9.3.
- [Release notes](https://github.com/microsoft/TypeScript/releases)
- [Changelog](https://github.com/microsoft/TypeScript/blob/main/azure-pipelines.release-publish.yml)
- [Commits](microsoft/TypeScript@v5.9.2...v5.9.3)

---
updated-dependencies:
- dependency-name: typescript
  dependency-version: 5.9.3
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -13,7 +13,7 @@
     "jest": "^30.1.3",
     "ts-jest": "^29.4.0",
     "ts-node": "^10.9.2",
-    "typescript": "^5.7.3"
+    "typescript": "^5.9.3"
   },
   "main": "src/index.ts",
   "name": "@nhsdigital/nhs-notify-event-schemas-letter-rendering",