Flake in VM preparation: Could not get lock /var/lib/dpkg/lock-frontend

```
++ sudo apt-get install -y jq
E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?
```
https://source.cloud.google.com/results/invocations/acda7a2c-1c53-48c8-9a4c-0295c0ab5fea/log

