fix(plugin-lighthouse): update to version 2.1.2

[erezrokah]

Are you adding a plugin or updating one?

• Adding a plugin
• Updating a plugin

Notable changes

• Replace http-server with express to support compression via fix: replace http-server by express to enable gzip compression netlify-plugin-lighthouse#222, kudos to @griable
• Puppeteer v10 (Chromium 92.0.4512.0 (r884014)) via fix(deps): update dependency puppeteer to v10 netlify-plugin-lighthouse#217
• Lighthouse v8 (Treemap support) via fix(deps): update dependency lighthouse to v8 netlify-plugin-lighthouse#216

Have you completed the following?

• Read and followed the plugin author guidelines.
• Included all required fields in your entry.
• Tested the plugin locally and on Netlify, using the plugin version stated in your entry.

Test plan
https://app.netlify.com/sites/netlify-build-reproductions/deploys/60c600c3ee6ca3712a90b59e

[netlify-bot]

Updated Packages

• https://diff.intrinsic.com/@netlify/plugin-lighthouse/2.1.0/2.1.2