feat: update plugin @netlify/plugin-lighthouse to version 3.4.0

[token-generator-app]

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Test plan
Please add a link to a successful public deploy log using the stated version of the plugin. Include any other context reviewers might need for testing.

[netlify-bot]

Updated Packages

• https://diff.intrinsic.com/@netlify/plugin-lighthouse/3.3.0/3.4.0

[jackbrewer]

Thanks @kevinsamoei, I was about to ask what the next steps were but you beat me to it!