Bump eslint-plugin-yml from 1.12.2 to 1.13.2 in /backend

Bumps [eslint-plugin-yml](https://github.com/ota-meshi/eslint-plugin-yml) from 1.12.2 to 1.13.2.
- [Release notes](https://github.com/ota-meshi/eslint-plugin-yml/releases)
- [Changelog](https://github.com/ota-meshi/eslint-plugin-yml/blob/master/CHANGELOG.md)
- [Commits](ota-meshi/eslint-plugin-yml@v1.12.2...v1.13.2)

---
updated-dependencies:
- dependency-name: eslint-plugin-yml
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

backend/package.json

@@ -69,7 +69,7 @@
     "eslint-plugin-promise": "^6.1.1",
     "eslint-plugin-security": "^2.1.1",
     "eslint-plugin-type-graphql": "^1.0.0",
-    "eslint-plugin-yml": "^1.12.2",
+    "eslint-plugin-yml": "^1.13.2",
     "jest": "^29.7.0",
     "nodemon": "^3.1.0",
     "prettier": "^3.2.5",