Bump net-imap from 0.3.7 to 0.4.2 #6106

Job	Run time
benchmark	2m 26s
Test compatibility with Primer ViewComponents (main)	9m 54s
test (5.2.6, 2.7, capture_patch_enabled)	1m 22s
test (6.0.4.4, 2.7, capture_patch_enabled)	1m 29s
test (6.1.4.4, 2.7, capture_patch_enabled)	1m 24s
test (7.0.2.3, 3.0, capture_patch_enabled)	1m 21s
test (main, 3.1, capture_patch_enabled)	1m 37s
test (main, 3.2, capture_patch_enabled)	1m 41s
test (5.2.6, 2.7, capture_patch_disabled)	1m 46s
test (6.0.4.4, 2.7, capture_patch_disabled)	1m 28s
test (6.1.4.4, 2.7, capture_patch_disabled)	1m 26s
test (7.0.2.3, 3.0, capture_patch_disabled)	1m 14s
test (main, 3.1, capture_patch_disabled)	1m 41s
test (main, 3.2, capture_patch_disabled)	1m 45s
coverage	39s
	31m 13s

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