deps: bump multiformats from 11.0.2 to 12.1.0 #80

Job	Run time
js-test-and-release / check	1m 11s
js-test-and-release / test-chrome	34s
js-test-and-release / test-firefox	33s
js-test-and-release / test-chrome-webworker	48s
js-test-and-release / test-node (windows-latest, lts/*)	2m 31s
js-test-and-release / test-node (ubuntu-latest, lts/*)	36s
js-test-and-release / test-node (macos-latest, lts/*)	3m 28s
js-test-and-release / test-firefox-webworker	34s
js-test-and-release / test-webkit (ubuntu-latest, lts/*)	26s
js-test-and-release / test-webkit (macos-latest, lts/*)	1m 57s
js-test-and-release / test-electron-main	41s
js-test-and-release / test-electron-renderer	27s
js-test-and-release / test-webkit-webworker (ubuntu-latest, lts/*)	19s
js-test-and-release / test-webkit-webworker (macos-latest, lts/*)	1m 17s
js-test-and-release / release-check	3s
js-test-and-release / release	51s
	16m 16s

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