ci: target x86-64-v3 in benchmarks workflow

[xtqqczze]

Ubuntu 26.04 builds packages targeting x86-64-v3, so using this target for benchmarks better reflects real-world performance.

[github-actions]

GNU testsuite comparison:

GNU test failed: tests/tail/truncate. tests/tail/truncate is passing on 'main'. Maybe you have to rebase?
Skip an intermittent issue tests/cut/bounded-memory (fails in this run but passes in the 'main' branch)
Note: The gnu test tests/tail/tail-n0f is now being skipped but was previously passing.
Congrats! The gnu test tests/tail/pipe-f is now passing!

[codspeed-hq]

Merging this PR will improve performance by ×3.3

⚠️ 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

⚡ 42 improved benchmarks
✅ 269 untouched benchmarks
⏩ 46 skipped benchmarks¹

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	Simulation	wc_lines_extreme_line_lengths[(100000, 200)]	1.4 ms	1.3 ms	+5.68%
⚡	Simulation	wc_lines_large_line_count[500000]	2.6 ms	2.5 ms	+6.26%
⚡	Simulation	wc_lines_variable_length[(50, 500)]	3.2 ms	3 ms	+6.32%
⚡	Simulation	wc_bytes_lines_synthetic[2000]	120.8 ms	113.3 ms	+6.65%
⚡	Simulation	wc_chars_large_line_count[100000]	713.4 µs	683 µs	+4.46%
⚡	Simulation	cksum_crc	16.8 ms	14.8 ms	+14.04%
⚡	Simulation	cksum_crc32b	13.8 ms	11.2 ms	+22.93%
⚡	Simulation	cksum_sha3	1.8 s	1.4 s	+30.38%
⚡	Simulation	cksum_default	16.8 ms	14.8 ms	+13.8%
⚡	Simulation	cksum_sha1	718.4 ms	657.8 ms	+9.23%
⚡	Simulation	cksum_shake256	1.9 s	1.4 s	+29.41%
⚡	Simulation	cksum_sm3	1.6 s	1.3 s	+19.29%
⚡	Simulation	cksum_sha2	1.8 s	1.5 s	+19.35%
⚡	Simulation	cksum_shake128	1.5 s	1.2 s	+29.27%
⚡	Simulation	cksum_sha512	1.1 s	1 s	+7.25%
⚡	Simulation	cksum_sha256	1.8 s	1.5 s	+19.35%
⚡	Simulation	cksum_sha384	1.1 s	1 s	+7.25%
⚡	Simulation	cksum_multiple_files	25.3 ms	22.2 ms	+13.77%
⚡	Simulation	cksum_raw_output	16.8 ms	14.7 ms	+14.29%
⚡	Simulation	cksum_sysv	48.1 ms	14.4 ms	×3.3
...	...	...	...	...	...

ℹ️ Only the first 20 benchmarks are displayed. Go to the app to view all benchmarks.

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_{Comparing xtqqczze:x86-64-v3 (d5ba7ee) with main (5aade31)}

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. ↩

[oech3]

This is misleading for people using binaries published at here and other distributions.

[oech3]

I think we can replace individual binaries with v3.