fix: RedPanda Helm install with "statefulset.podTemplate.spec.securityContext.runAsNonRoot"

[maksym-iv]

Some security audit tools (GCP SCC) rises a concern if spec.template.spec.securityContext.runAsNonRoot != true, however setting it to true will cause STS pod to fail with CreateContainerConfigError: Error: container's runAsUser breaks non-root policy... error .

Enforcing runAsNonRoot: false for tuning container should fix the issue.