fix: adding build-prod tasks to all of the npm dependencies that need artifacts

[JessicaSachs]

There was a bug in the release process where:

1. a change was made where the build-prod task was run instead of the build task, so nothing was building
2. also we weren't waiting for the builds to pass before releasing

• Closes @cypress/webpack-preprocessor latest version appears not to have dist directory #9037

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[cypress]

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Test summary

8639 • 0 • 124 • 3 • 1

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Run details

Project	cypress
Status	Passed
Commit	5f3796e
Started	Oct 30, 2020 3:46 PM
Ended	Oct 30, 2020 3:58 PM
Duration	12:33 💡
OS	Linux Debian - 10.2
Browser	Multiple

View run in Cypress Dashboard ➡️

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Flakiness

	cypress/integration/retries.ui.spec.js		1
1	runner/cypress retries.ui.spec > opens attempt on each attempt failure for the screenshot, and closes after test passes

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[JessicaSachs]

We're breaking our own build because we broke our dependent packages.