Merge Request Security widget is failing when no vulnerabilities are found

Summary

Spotted by @ayufan, the Security Widget will fail if at least one of the report is empty.

Steps to reproduce

• Run dependency_scanning job on a project without vulnerabilities
• Create a MR on a branch with or without vulnerabilities
• Open the Security Widget --> Dependency scanning: Loading resulted in an error

Example Project

https://staging.gitlab.com/secure-team-test/yarn-remediation

What is the current bug behavior?

"Dependency scanning: Loading resulted in an error", because vulnerabilities is null in the artifact.

What is the expected correct behavior?

Dependency scanning loading correctly.

Possible fixes

Root cause of bug is fixed already: gitlab-org/security-products/analyzers/common@34fb051d Now we need to update the analyzers to use common@v2.0.2.