fix(migration): add vitest to devDependencies for peer dep resolution #7240

Job	Run time
optimize-ci	4s
detect-changes	6s
download-previous-rolldown-binaries	8s
Lint	44s
Test (Linux x64 musl)	2m 48s
Test (namespace-profile-mac-default, aarch64-apple-darwin)	1m 5s
Test (namespace-profile-linux-x64-default, x86_64-unknown-linux-gnu)	1m 48s
Test (windows-latest, x86_64-pc-windows-msvc)	3m 50s
CLI E2E test (Linux x64 musl)	3m 23s
CLI E2E test (namespace-profile-linux-x64-default, x86_64-unknown-linux-gnu)	1m 18s
CLI E2E test (windows-latest, x86_64-pc-windows-msvc)	4m 41s
CLI snap test (aarch64-apple-darwin, 2/3)	1m 43s
CLI E2E test (namespace-profile-mac-default, aarch64-apple-darwin)	1m 5s
CLI snap test (aarch64-apple-darwin, 1/3)	1m 20s
CLI snap test (x86_64-pc-windows-msvc, 1/3)	4m 11s
CLI snap test (x86_64-unknown-linux-gnu, 2/3)	1m 54s
CLI snap test (x86_64-unknown-linux-gnu, 1/3)	1m 38s
CLI snap test (x86_64-pc-windows-msvc, 3/3)	5m 2s
CLI snap test (x86_64-pc-windows-msvc, 2/3)	5m 15s
CLI snap test (aarch64-apple-darwin, 3/3)	1m 44s
CLI snap test (x86_64-unknown-linux-gnu, 3/3)	2m 10s
Local CLI `vp install` E2E test	-1s
done	2s
	45m 58s

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