BAH-4708: Upgrade implementer-interface Docker base image to fix CRITICAL vulnerabilities

[Anutw]

Summary

• Bump implementer-interface Docker base image to httpd:2.4.67-alpine3.23 to resolve the 5 CRITICAL Trivy findings reported in BAH-4708.

Why

• httpd:2.4.62-alpine3.20 carries 5 CRITICAL CVEs in bundled Alpine packages (per Trivy scan referenced in BAH-4708). The upgrade picks up patched OpenSSL / expat / APR / libxml2 / busybox versions shipped with Alpine 3.23.
• httpd 2.4.x is API/ABI-compatible across patch versions; this image only serves static assets, so behavioural risk is minimal.
• Multi-arch parity preserved (linux/amd64, linux/arm64).

Test plan

• CI: Build and Publish workflow succeeds (Docker build for amd64 + arm64).
• CI: yarn test passes.
• Manual: Pull resulting image and verify the implementer-interface UI loads and serves assets correctly.
• Re-run Trivy on the new image and confirm the 5 CRITICAL findings are resolved.

Out of scope (follow-up)

• Addressing HIGH/MEDIUM findings on the same image.
• Adding hadolint / Trivy scan steps to CI.
• BAH-4709 (Part 2) covers the same fix for other Bahmni images.