[Stack 9.4.0] Update shared_configuration.stack.next

[shainaraskas]

ff was the 7th but I am holding this for monday to avoid things going wrong over the weekend

also need to reach out to beats and logstash to have them create their 9.4 branches cc: @theletterf

Summary

Updates shared_configuration.stack.next to 9.4 so staging can validate cross-repo links for the upcoming Stack 9.4 minor (post–feature-freeze step per internal minor release process).

Day-before GA Assembler + versions.yml changes are tracked separately (see https://github.com/elastic/dev/issues/3502).

Refs

• https://github.com/elastic/dev/issues/3502

Made with Cursor

[coderabbitai]

📝 Walkthrough

Walkthrough

This change updates the config/assembler.yml configuration file to bump the "next" stack reference from main to 9.4. The shared_configuration.stack.current remains at 9.3 and shared_configuration.stack.edge remains at main. This is a configuration-only update affecting a single value in the stack versioning setup.

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Description check	✅ Passed	The description clearly relates to the changeset—updating shared_configuration.stack.next from main to 9.4 for Stack 9.4 release validation.
Title check	✅ Passed	The title accurately describes the main change: updating shared_configuration.stack.next to 9.4, which is the primary and only modification in the changeset.

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✨ Finishing Touches

✨ Simplify code

• Create PR with simplified code
• Commit simplified code in branch docs/stack-next-9.4-post-ff

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