Old runner images still being used despite the new one showing as deployed

[lengau]

Description

The status badge currently shows ubuntu-24.04 runner image release 20250804.2 as deployed (not deploying), but we're still pretty consistently getting the old version of the runner image (20250728.1.0) in at least one workflow.

Platforms affected

• Azure DevOps
• GitHub Actions - Standard Runners
• GitHub Actions - Larger Runners

Runner images affected

• Ubuntu 22.04
• Ubuntu 24.04
• macOS 13
• macOS 13 Arm64
• macOS 14
• macOS 14 Arm64
• macOS 15
• macOS 15 Arm64
• Windows Server 2019
• Windows Server 2022
• Windows Server 2025

Image version and build link

https://github.com/canonical/charmcraft/actions/runs/16817638721/job/47688865226?pr=2407

Is it regression?

no

Expected behavior

By the time an image release shows as "deployed" all new runner instances requesting that image use the new release.

Actual behavior

We get the old release.

Repro steps

Unsure how to reproduce with a new PR, but re-running the failing workflow above consistently gets us the old release.

[vidyasagarnimmagaddi]

Hi @lengau ,Thank you for bringing this issue to our attention. We will look into this issue and will update you after investigation.