Revert "ci: trust preinstalled Homebrew taps on macOS"

[xtqqczze]

This reverts commit c63f02e.

actions/runner-images#14543 was completed upstream.

[xtqqczze]

actions/runner-images#14543 is not yet targeting a release, keeping as a draft.

[github-actions]

Binary size comparison:

Individual binary size comparison VS main (threshold: >=5% AND >=4 KB).

Total size of compared binaries: 148.94 MB (+324 KB, +0.21%)

Significant per-binary changes:
  install     1.24 MB ->    1.32 MB  (+80 KB, +6.29%)
  mkdir       1.09 MB ->    1.17 MB  (+80 KB, +7.14%)
  mkfifo      1.09 MB ->    1.16 MB  (+76 KB, +6.83%)
  mknod       1.09 MB ->    1.17 MB  (+76 KB, +6.79%)

[codspeed-hq]

Merging this PR will improve performance by 3.86%

⚠️ Different runtime environments detected

Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.

Open the report in CodSpeed to investigate

⚡ 2 improved benchmarks
✅ 345 untouched benchmarks
⏩ 46 skipped benchmarks¹

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	Simulation	du_max_depth_balanced_tree[(6, 4, 10)]	64.7 ms	62.2 ms	+3.95%
⚡	Simulation	du_summarize_balanced_tree[(5, 4, 10)]	16.6 ms	16 ms	+3.77%

Tip

Curious why this is faster? Comment @codspeedbot explain why this is faster on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing xtqqczze:revert-tap-trust (70a97bc) with main (fb71685)}

Footnotes

1. 46 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[github-actions]

GNU testsuite comparison:

Skipping an intermittent issue tests/cut/bounded-memory (passes in this run but fails in the 'main' branch)
Skipping an intermittent issue tests/tail/retry (passes in this run but fails in the 'main' branch)
Note: The gnu test tests/misc/write-errors was skipped on 'main' but is now failing.

[Copilot]

Pull request overview

This PR reverts a temporary GitHub Actions workaround that explicitly trusted a preinstalled Homebrew tap on macOS runners, based on the upstream runner-images change having been completed.

Changes:

• Remove the “Trust preinstalled Homebrew taps” (brew trust aws/tap) step from multiple jobs in the l10n workflow.
• Remove the same Homebrew trust step from macOS-related jobs in the main CI/CD workflow.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
.github/workflows/l10n.yml	Removes the macOS-only Homebrew tap trust workaround from affected l10n jobs.
.github/workflows/CICD.yml	Removes the macOS-only Homebrew tap trust workaround from affected CI jobs.

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