feat: upgrade Lighthouse plugin to 2.1.3

[ehmicky]

Are you adding a plugin or updating one?

• Adding a plugin
• Updating a plugin: Lighthouse plugin 2.1.3

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.

[coliff]

can this PR be merged? We would like to use the updated version on Netlify. :-)