chore: ensure we checkout gitmodules

Author: AVVS

.semaphore/semaphore.yml

@@ -20,6 +20,8 @@ global_job_config:
       - curl -f https://get.pnpm.io/v6.16.js | node - add --global pnpm@6
       - pnpm config set store-dir=~/.pnpm-store
       - checkout
+      - git submodule init
+      - git submodule update
       - cache restore node-$(checksum pnpm-lock.yaml)
       - pnpm i --frozen-lockfile --prefer-offline --ignore-scripts
       - sudo chgrp -hR +1000 ~/.pnpm-store ./ # so that it matches node uid/gid in the docker container