lib,test: increase retryDelay to remove directories on Windows #704

Job	Run time
Lint using ESLint	30s
Test / prepare-node-matrix	5s
Test / test (20, ubuntu-latest)	2m 7s
Test / test (20, macos-latest)	2m 49s
Test / test (20, windows-latest)	4m 51s
Test / test (18, ubuntu-latest)	2m 0s
Test / test (18, macos-latest)	4m 17s
Test / test (18, windows-latest)	5m 25s
Test / test (21, ubuntu-latest, experimental)	2m 9s
Test / test (21, macos-latest, experimental)	3m 57s
Test / test (21, windows-latest, experimental)	4m 45s
	32m 55s

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