deps: update to wasm-bindgen@0.2.121

[guybedford]

No description provided.

[codspeed-hq]

Merging this PR will improve performance by 31.15%

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

⚠️ 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

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	WallTime	worker_internal_time	80 ms	61 ms	+31.15%
⚡	WallTime	e2e_time	82 ms	63 ms	+30.16%

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_{Comparing update-wasm-bindgen (6cdb5c3) with main (417576c)}