GH-47564: [C++] Update expected L2 CPU cache range to 32KiB-64MiB

[matshch]

Rationale for this change

On newer Apple silicon CPUs there is more L2 CPU cache than expected by the current unit tests. This results in the unit test failing:

/tmp/nix-build-arrow-cpp-20.0.0.drv-0/source/cpp/src/arrow/util/io_util_test.cc:1099: Failure
Value of: l2 >= 32 * 1024 && l2 <= 12 * 1024 * 1024
  Actual: false
Expected: true
unexpected L2 size: 16777216
[  FAILED  ] CpuInfo.Basic (0 ms)

What changes are included in this PR?

The expected L2 CPU cache range is increased to 32KiB-64MiB to accommodate newer CPUs.

Are these changes tested?

Yes.

Are there any user-facing changes?

No.

• GitHub Issue: [C++] CpuInfo.Basic test fails on newer Apple silicon CPUs due to unexpectedly large L2 CPU cache #47564

[github-actions]

Thanks for opening a pull request!

If this is not a minor PR. Could you open an issue for this pull request on GitHub? https://github.com/apache/arrow/issues/new/choose

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Then could you also rename the pull request title in the following format?

GH-${GITHUB_ISSUE_ID}: [${COMPONENT}] ${SUMMARY}

or

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See also:

• Other pull requests
• Contribution Guidelines - Contributing Overview

[github-actions]

⚠️ GitHub issue #47564 has been automatically assigned in GitHub to PR creator.

[kou]

+1

[matshch]

Do we need to do anything else there to merge this PR?

[kou]

I'll merge this in a few days if nobody objects it.

[matshch]

@kou ping

[kou]

Oh, sorry. I forgot this... I'll merge this.

[conbench-apache-arrow]

After merging your PR, Conbench analyzed the 3 benchmarking runs that have been run so far on merge-commit 8e3d849.

There were no benchmark performance regressions. 🎉

The full Conbench report has more details.