releng: Update e4.40 and eStaging targets to 2026-06 release

[arfio]

What it does

• Update target for the 2026-06 release

How to test

Build Trace Compass with e4.40 or staging target.

Follow-ups

N/A

Review checklist

• As an author, I have thoroughly tested my changes and carefully followed the instructions in this template

[coderabbitai]

Important

Review skipped

Auto reviews are disabled on base/target branches other than the default branch.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 7b34e434-67d0-43d5-bdb8-4377b6c9d31d

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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