Performance: use preconnect over dns-prefetch #92126

Job	Run time
Determine tests matrix	1m 9s
E2E: Build jetpack-boost	3m 15s
E2E: Build jetpack-core	3m 57s
Jetpack connection e2e tests	4m 12s
Jetpack pre-connection e2e tests	2m 36s
Jetpack post-connection e2e tests	5m 34s
Jetpack Boost - Base e2e tests	3m 38s
Jetpack Boost - Modules e2e tests	4m 3s
Jetpack Boost - Critical CSS e2e tests	3m 30s
Jetpack Boost - Page Cache e2e tests	3m 11s
Jetpack Boost - Concatenate JS/CSS e2e tests	3m 3s
Jetpack Boost - Image CDN e2e tests	2m 46s
Jetpack Boost - Image Guide e2e tests	2m 46s
Test report	7s
Slack notification	1m 10s
	44m 57s

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