build(deps-dev): bump eslint-plugin-promise in /backend

Bumps [eslint-plugin-promise](https://github.com/eslint-community/eslint-plugin-promise) from 6.6.0 to 7.2.1.
- [Release notes](https://github.com/eslint-community/eslint-plugin-promise/releases)
- [Changelog](https://github.com/eslint-community/eslint-plugin-promise/blob/main/CHANGELOG.md)
- [Commits](eslint-community/eslint-plugin-promise@v6.6.0...v7.2.1)

---
updated-dependencies:
- dependency-name: eslint-plugin-promise
  dependency-version: 7.2.1
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

backend/package-lock.json

@@ -31,7 +31,7 @@
     "eslint-plugin-n": "^16.6.2",
     "eslint-plugin-no-catch-all": "^1.1.0",
     "eslint-plugin-prettier": "^5.5.3",
-    "eslint-plugin-promise": "^6.1.1",
+    "eslint-plugin-promise": "^7.2.1",
     "eslint-plugin-react": "^7.37.5",
     "eslint-plugin-react-hooks": "^4.6.0",
     "eslint-plugin-react-refresh": "^0.4.20",