chore: Bump Binaryen (wasm-opt) to version 121 #26878

Job	Run time
Paths filter	7s
Build for browser tests	2m 4s
Test Node.js 22 / ubuntu-24.04	3m 56s
Test Node.js 22 / windows-latest	5m 30s
Test in ${{ matrix.browser }}	0s
Test Node.js 23 / ubuntu-24.04	4m 25s
Test Node.js ${{ matrix.node_version }} / ${{ matrix.os }}	0s
Test Node.js 23 / windows-latest	6m 45s
Test in chrome	1m 59s
Test in firefox	2m 54s
Test in edge	2m 10s
	29m 50s

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