fix: custom dns-resolvers test passes #143

Job	Run time
js-test-and-release / check	2m 27s
js-test-and-release / test-chrome	1m 54s
js-test-and-release / test-node (windows-latest, lts/*)	1m 36s
js-test-and-release / test-firefox	1m 42s
js-test-and-release / test-chrome-webworker	1m 37s
js-test-and-release / test-node (ubuntu-latest, lts/*)	1m 27s
js-test-and-release / test-node (macos-latest, lts/*)	1m 45s
js-test-and-release / test-firefox-webworker	1m 47s
js-test-and-release / test-webkit (ubuntu-latest, lts/*)	1m 4s
js-test-and-release / test-webkit-webworker (ubuntu-latest, lts/*)	41s
js-test-and-release / test-webkit (macos-latest, lts/*)	3m 26s
js-test-and-release / test-webkit-webworker (macos-latest, lts/*)	3m 34s
js-test-and-release / test-electron-main	1m 35s
js-test-and-release / test-electron-renderer	25s
js-test-and-release / release-check	0s
js-test-and-release / release	0s
	25m 0s

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