fix: update dependencies and dev dependencies, drop support for Node16

[andibeuge]

Dependent project is Backend which is on Node v24 now

https://chat.staging.parcellab.dev/share/eb1ztWVJyEehXuLX9fiFG

[andibeuge]

Response to review comments

Why were eslint-plugin-import and eslint-plugin-promise explicitly added?

These are peer dependencies required by @parcellab/eslint-config@0.5.5. They were missing in the previous setup, which could have caused eslint to not work properly or show warnings about missing peer dependencies.

When you run npm ls eslint-plugin-import eslint-plugin-promise, you can see they are required by @parcellab/eslint-config:

├─┬ @parcellab/eslint-config@0.5.5
│ ├── eslint-plugin-import@2.32.0
│ └── eslint-plugin-promise@7.2.1

Why were diff and js-yaml added to overrides?

These are transitive dependencies that needed version updates:

• diff@^8.0.3: Required by mocha@11.7.5 (updated from mocha@9.2.2). The override ensures we use a specific secure version.
• js-yaml@^4.1.1: Required by eslint@8.57.1 (via @parcellab/eslint-config). The override addresses the security vulnerability in older versions.