chore(deps): update rust crate oxc_sourcemap to v8.1.2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
oxc_sourcemap	workspace.dependencies	patch	8.1.1 → 8.1.2

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Release Notes

oxc-project/oxc-sourcemap (oxc_sourcemap)

v8.1.2

Compare Source

Other

• add fast path for 4 / 5 segments (#​420)
• add encode mappings fast path (#​421)
• update sponsor section (#​417)

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[codspeed-hq]

Merging this PR will not alter performance

✅ 67 untouched benchmarks
⏩ 9 skipped benchmarks¹

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_{Comparing renovate/oxc_sourcemap-8.x-lockfile (f1dd232) with main (b1bcf72)²}

Footnotes

1. 9 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. ↩

2. No successful run was found on main (56addc9) during the generation of this report, so b1bcf72 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩