Fix gh-aw lockfile update workflow syntax

[trask]

The Check patch step split a Bash case pattern across lines after |, causing the auto-update workflow to fail with:

syntax error near unexpected token `newline'

Keep the two allowed path patterns on the same logical line so Bash can parse the allowlist and proceed with the generated lockfile patch.

This was exposed by #19216 when its build-common.yml update triggered the gh-aw lockfile workflow.

Validation:

• Extracted Check patch run block passes bash -n
• git diff --check

[opentelemetry-pr-dashboard]

Pull request dashboard status

Status last refreshed: 2026-07-22 21:20:57 UTC.

• Status: Merged.

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[Copilot]

Pull request overview

Fixes Bash parsing in the gh-aw lockfile auto-update workflow.

Changes:

• Keeps both allowed lockfile path patterns in one valid case pattern.