Test Sysdig IaC policy evaluation for voting app

[Carroline790]

Summary

This PR makes a small change to the Kubernetes manifests for the voting app to exercise Sysdig's IaC / Pull Request Policy Evaluation.

Changes:

• Updated the vote deployment replicas from 1 to 2.
• (Optional: Added basic resources.requests for the vote container.)

Purpose

• Validate that the Sysdig Git integration (Git Source: voting-app-iac) is correctly scanning PRs.
• See which IaC posture / compliance policies are applied (e.g., CIS Kubernetes, Sysdig K8s Best Practices).
• Confirm that any misconfigurations in the manifests (containers running as root, missing resource limits, etc.) are surfaced directly in the PR checks.

Notes

This change is intentionally minimal and safe; its main goal is to demonstrate Sysdig's IaC scanning workflow rather than to introduce functional changes to the application.