chore(deps): update dependency ubuntu to v26

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	OpenSSF
ubuntu	github-runner	major	24.04-arm → 26.04-arm
ubuntu	github-runner	major	24.04 → 26.04

---

Configuration

📅 Schedule: (UTC)

• Branch creation
  • At any time (no schedule defined)
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about these updates again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

Summary by CodeRabbit

• Chores
  • Updated automated workflows to use Ubuntu 26.04 runners, including ARM-based runners where applicable.
  • Updated QEMU setup for improved compatibility with the newer runner environment.
  • Existing build, testing, publishing, and reporting behavior remains unchanged.

[coderabbitai]

Navigate logical layers of code changes, visualize relationships, and explore their blast radius.

Note

Reviews paused

It looks like this branch is under active development. To avoid overwhelming you with review comments due to an influx of new commits, CodeRabbit has automatically paused this review. You can configure this behavior by changing the reviews.auto_review.auto_pause_after_reviewed_commits setting.

Use the following commands to manage reviews:

• @coderabbitai resume to resume automatic reviews.
• @coderabbitai review to trigger a single review.

Use the checkboxes below for quick actions:

• ▶️ Resume reviews
• 🔍 Trigger review

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: f76df6c1-0372-4412-93dc-9b997d067e8c

📥 Commits

Reviewing files that changed from the base of the PR and between 004129a and f20d248.

📒 Files selected for processing (1)

• .github/workflows/ci.yml

Included review availability: Your plan provides up to 10 included reviews per hour; 9 remain after this review.

---

📝 Walkthrough

Walkthrough

The workflows now use Ubuntu 26.04 runners. The CI workflow also updates QEMU package installation and removes binfmt registration output.

Changes

GitHub Actions runner updates

Layer / File(s)	Summary
Update workflow runners and QEMU setup .github/workflows/ci.yml, .github/workflows/dockerhub-description.yml, .github/workflows/earthly-count.yml	The lint and test jobs now use ubuntu-26.04. The Docker Hub description and Earthly count workflows now use ubuntu-26.04-arm. CI installs qemu-user-binfmt instead of qemu-user-static and binfmt-support, and no longer displays binfmt registrations.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~5 minutes

Change: Other

Merge Risk: ⚪ Minimal · up to f20d2

The workflows move to Ubuntu 26.04 runners and update CI’s QEMU package setup; no concrete production or data-integrity risk is established, so the PR is mergeable with normal checks.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: updating GitHub Actions Ubuntu runner images to version 26, including ARM runners.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches 💡 1

🧪 Generate unit tests (beta)

• Commit to this branch
• Create a new PR

🛠️ Fix failing CI checks 💡

• Commit to this branch
• Create a new PR

---

_{Comment @coderabbitai help to get the list of available commands.}

[github-actions]

➖ Are we earthbuild yet?

No change in "earthly" occurrences

📈 Overall Progress

Branch	Total Count
main	22
This PR	22
Difference	+0

---

Keep up the great work migrating from Earthly to Earthbuild! 🚀

💡 Tips for finding more occurrences

Run locally to see detailed breakdown:

./.github/scripts/count-earthly.sh

Note that the goal is not to reach 0.
There is anticipated to be at least some occurences of earthly in the source code due to backwards compatibility with config files and language constructs.

[renovate]

Edited/Blocked Notification

Renovate will not automatically rebase this PR, because it does not recognize the last commit author and assumes somebody else may have edited the PR.

You can manually request rebase by checking the rebase/retry box above.

⚠️ Warning: custom changes will be lost.