chore: rename master to main #56

Job	Run time
js-test-and-release / check	43s
js-test-and-release / test-chrome	57s
js-test-and-release / test-electron-main	18s
js-test-and-release / test-chrome-webworker	20s
js-test-and-release / test-electron-renderer	17s
js-test-and-release / test-firefox	32s
js-test-and-release / test-node (windows-latest, lts/*)	2m 9s
js-test-and-release / test-firefox-webworker	27s
js-test-and-release / test-webkit (ubuntu-latest, lts/*)	9s
js-test-and-release / test-node (ubuntu-latest, lts/*)	50s
js-test-and-release / test-webkit (macos-latest, lts/*)	1m 23s
js-test-and-release / test-node (macos-latest, lts/*)	1m 27s
js-test-and-release / test-webkit-webworker (ubuntu-latest, lts/*)	12s
js-test-and-release / test-webkit-webworker (macos-latest, lts/*)	1m 18s
js-test-and-release / release-check	2s
js-test-and-release / release	28s
	11m 32s

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