fix: ttl and caching for ipns urls #100

Job	Run time
js-test-and-release / check	2m 19s
js-test-and-release / test-node (windows-latest, lts/*)	3m 49s
js-test-and-release / test-node (ubuntu-latest, lts/*)	34s
js-test-and-release / test-node (macos-latest, lts/*)	3m 14s
js-test-and-release / test-chrome	43s
js-test-and-release / test-chrome-webworker	49s
js-test-and-release / test-firefox	42s
js-test-and-release / test-electron-main	54s
js-test-and-release / test-firefox-webworker	59s
js-test-and-release / test-webkit (ubuntu-latest, lts/*)	51s
js-test-and-release / test-webkit-webworker (ubuntu-latest, lts/*)	1m 1s
js-test-and-release / test-webkit (macos-latest, lts/*)	2m 27s
js-test-and-release / test-webkit-webworker (macos-latest, lts/*)	1m 54s
js-test-and-release / test-electron-renderer	28s
js-test-and-release / release-check	0s
js-test-and-release / release	0s
	20m 44s

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