Dependency upgrades strategy

[LVMVRQUXL]

Description

For better transparency, we would like to convention and document our strategy about dependency upgrades. For instance, this document should explain when we will upgrade a dependency (Kotlin for example) and why. This documentation should be in the documentation/dependencies.md file introduced by the issue #288.

Dependencies

This issue is blocked by the following ones:

• [x] #288

Checklist

• [ ] Document our dependency upgrades strategy.
• [ ] Update the Unreleased section in CHANGELOG.