feat(changelog): environmental-footprint-added-discover-the-environmenta 2025-12-05 (#5934)

* feat(changelog): add new entry

* Apply suggestions from code review

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Co-authored-by: Changelog bot <changelog-bot@users.noreply.github.com>
Co-authored-by: Benedikt Rollik <brollik@scaleway.com>

Author: 3 people

changelog/december2025/2025-12-05-environmental-footprint-added-discover-the-environmenta.mdx

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+---
+title: Discover the environmental impact of your GPU Instances now! 
+status: added
+date: 2025-12-05
+category: billing
+product: environmental-footprint
+---
+
+Our Environmental Footprint Calculator now supports GPU Instances!
+Designed to go beyond simple accounting, it provides impact metrics from full product life-cycle covering both CO₂ emissions and water consumption.
+This multi-criteria approach helps you understand, compare and reduce the footprint of your cloud infrastructure. [Learn more](https://www.scaleway.com/en/docs/environmental-footprint/additional-content/instances-env-footprint/).
+