Summary: Patches up testing configuration for the various @pixie/* packages, runs `yarn install` again, and brings in updated `go.mod` and `go.sum` that were missed when landing D7452. This is all chore work and cleans up diffs for upcoming changes some more.

Test Plan: N/A

Reviewers: michelle, vihang, #engineering

Reviewed By: vihang, #engineering

Differential Revision: https://phab.corp.pixielabs.ai/D7460

GitOrigin-RevId: dcf594e7bd8f529eae9b3870bc7fdeb47d6c8d9a