fix: ttl and caching for ipns urls #98

Job	Run time
js-test-and-release / check	2m 5s
js-test-and-release / test-chrome	50s
js-test-and-release / test-electron-main	25s
js-test-and-release / test-electron-renderer	19s
js-test-and-release / test-chrome-webworker	34s
js-test-and-release / test-firefox	32s
js-test-and-release / test-node (windows-latest, lts/*)	47s
js-test-and-release / test-firefox-webworker	45s
js-test-and-release / test-node (ubuntu-latest, lts/*)	32s
js-test-and-release / test-webkit (ubuntu-latest, lts/*)	1m 23s
js-test-and-release / test-node (macos-latest, lts/*)	48s
js-test-and-release / test-webkit (macos-latest, lts/*)	3m 28s
js-test-and-release / test-webkit-webworker (ubuntu-latest, lts/*)	1m 19s
js-test-and-release / test-webkit-webworker (macos-latest, lts/*)	2m 3s
js-test-and-release / release-check	0s
js-test-and-release / release	0s
	15m 50s

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