ci: update circleci to ubuntu-2404:2025.09.1 (latest) machine image

[MikeMcC399]

Situation

The currently used CircleCI machine image ubuntu-2204:2024.11.1 is based on the older Ubuntu 22.04 LTS, released in Apr 2022. The current Ubuntu LTS release is 24.04, released in Apr 2024. (See Ubuntu release cycle.)

The Docker versions in the CircleCI images are quite outdated, especially Docker buildx is at 0.17.1 compared to the current buildx release 0.28.0.

CircleCI has now announced a new set of machine images:

• ubuntu-2204:2025.09.1
• ubuntu-2404:2025.09.1

Change

Migrate the machine image used in circle.yml using
ubuntu-2404:2025.09.1 which updates the components as follows:

Image tag	Node.js	Docker Engine	buildx	Status
ubuntu-2204:2024.11.1	22.11.0	27.3.1	v0.17.1	current
ubuntu-2404:2025.09.1	22.19.0	28.4.0	v0.28.0	future

This is a minor version update for Node.js from 22.x LTS. It is a major version update for Docker Engine from 27.x to 28.x and a major functional update from Docker Buildx v0.17.1 to v0.28.0.

[cypress-app-bot]

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