deprecate gha-artifact-name

[tmclaugh]

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[Copilot]

Pull request overview

This PR removes the dependency on ServerlessOpsIO/gha-artifact-name by eliminating the artifact naming override/input/output from the composite action, and updates documentation to match the new behavior.

Changes:

• Removed artifact_name_override input and the Set artifact name step that used ServerlessOpsIO/gha-artifact-name@v1.
• Stopped setting an explicit artifact name for actions/upload-artifact@v4 and removed the artifact-name output.
• Updated README to remove artifact naming guidance and reposition the action description around SAM packaging + artifact storage.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 7 comments.

File	Description
action.yaml	Removes artifact naming input/step/output and no longer sets upload-artifact’s name.
README.md	Removes artifact naming docs and updates the action description/inputs/outputs accordingly.

Comments suppressed due to low confidence (1)

action.yaml:34

• if: ${{ inputs.use_aws_sam }} will treat any non-empty string (including the literal "false") as truthy in GitHub Actions expressions. Compare explicitly (e.g., inputs.use_aws_sam == 'true') or provide a default and use fromJSON() to ensure the SAM packaging step only runs when intended.

    - name: Package & Upload SAM artifact
      id: package-sam
      if: ${{ inputs.use_aws_sam }}
      uses: ServerlessOpsIO/gha-package-aws-sam@v1

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