build(deps-dev): bump typescript from 5.9.2 to 5.9.3 in /backend

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](https://github.com/microsoft/TypeScript/compare/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] <support@github.com>

backend/package-lock.json

@@ -35,7 +35,7 @@
         "jest": "^30.1.3",
         "ts-jest": "^29.4.4",
         "tsx": "^4.20.6",
-        "typescript": "^5.9.2"
+        "typescript": "^5.9.3"
       }
     },
     "node_modules/@ampproject/remapping": {
@@ -10116,9 +10116,9 @@
       }
     },
     "node_modules/typescript": {
-      "version": "5.9.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.2.tgz",
-      "integrity": "sha512-CWBzXQrc/qOkhidw1OzBTQuYRbfyxDXJMVJ1XNwUHGROVmuaeiEm3OslpZ1RV96d7SKKjZKrSJu3+t/xlw3R9A==",
+      "version": "5.9.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+      "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
       "dev": true,
       "license": "Apache-2.0",
       "bin": {

backend/package.json

@@ -37,7 +37,7 @@
     "jest": "^30.1.3",
     "ts-jest": "^29.4.4",
     "tsx": "^4.20.6",
-    "typescript": "^5.9.2"
+    "typescript": "^5.9.3"
   },
   "dependencies": {
     "@fastify/type-provider-typebox": "^5.2.0",