deps: bump multiformats from 11.0.0 to 12.1.2 #319

Job	Run time
js-test-and-release / check	1m 27s
js-test-and-release / test-chrome	2m 10s
js-test-and-release / test-node (windows-latest, lts/*)	5m 10s
js-test-and-release / test-firefox	2m 0s
js-test-and-release / test-chrome-webworker	54s
js-test-and-release / test-node (ubuntu-latest, lts/*)	4m 59s
js-test-and-release / test-node (macos-latest, lts/*)	5m 12s
js-test-and-release / test-electron-main	34s
js-test-and-release / test-firefox-webworker	1m 37s
js-test-and-release / test-webkit (ubuntu-latest, lts/*)	22s
js-test-and-release / test-webkit-webworker (ubuntu-latest, lts/*)	20s
js-test-and-release / test-webkit (macos-latest, lts/*)	1m 30s
js-test-and-release / test-webkit-webworker (macos-latest, lts/*)	1m 25s
js-test-and-release / test-electron-renderer	22s
js-test-and-release / release-check	0s
js-test-and-release / release	0s
	28m 2s

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