fix: update sample app image references

[pavanvishnusai]

What this PR does / why we need it:

Updates the sample application manifests under deployment/samples to use the project-akri/examples image namespace.

The sample apps have moved to the project-akri/examples repository, and the examples repo workflows now publish app images under:

ghcr.io/project-akri/examples/${component}

This PR updates:

• ghcr.io/project-akri/akri/video-streaming-app:latest-dev
• ghcr.io/project-akri/akri/anomaly-detection-app:latest-dev

to:

• ghcr.io/project-akri/examples/video-streaming-app:latest-dev
• ghcr.io/project-akri/examples/anomaly-detection-app:latest-dev

This also supports the v0.14.0 release tracking item to audit Helm/sample image defaults after the examples repo migration.

Special notes for your reviewer:

This is a sample manifest update only. No production code changes.

Testing:

• Verified the updated image paths match the project-akri/examples image namespace used by the examples repo build workflows.
• Ran grep to confirm old sample app image references are no longer present in deployment/samples.

If applicable:

• this PR has an associated PR with documentation in akri-docs
• this PR contains unit tests
• added code adheres to standard Rust formatting (cargo fmt)
• code builds properly (cargo build)
• code is free of common mistakes (cargo clippy)
• all Akri tests succeed (cargo test)
• inline documentation builds (cargo doc)
• all commits pass the DCO bot check by being signed off -- see the failing DCO check for instructions on how to retroactively sign commits