Fix usage of sentry cli in CI

[raymondjacobson]

Description

Upload of sourcemaps broken on CI currently https://app.circleci.com/pipelines/github/AudiusProject/audius-protocol/68085/workflows/8afcb8c3-463e-4963-ab72-e123239a781c/jobs/1000782

pnpm would be nice here, but this works using npm's script module resolution. Remove redundant install in mobile.

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide repro instructions & any configuration.

For web, was able to test via rerunning job with CI

For mobile, was only able to test locally that the script does find the right binary. Will test again on CI