qa: codeintel tests failing on first run

Created by: davejrt

codeintel qa tests are failing in CI when running yarn run test:regression:codeintel with the following error:

sourcegraph-qa-test:   1 failing
--
  | sourcegraph-qa-test:   1) Code intelligence regression test suite
  | sourcegraph-qa-test:        "before all" hook in "Code intelligence regression test suite":
  | sourcegraph-qa-test:      Error: Timeout of 30000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (/sourcegraph/client/web/src/regression/codeintel.test.ts)

If run a second time, the following error is produced after the repos have cloned tests pass: https://buildkite.com/sourcegraph/regression/builds/98#ecd7647b-8a7c-4faf-986e-77f6eeedb535/40-2733