Update security scan directory in CI and documentation

[javidahmed64592]

This pull request updates the security scanning workflow to ensure that the bandit tool scans the correct source directory, and brings the documentation in line with this change. Additionally, it removes an outdated step from the build wheel workflow documentation.

Security scanning workflow updates:

• The bandit security scan in .github/workflows/ci.yml now targets the python_template_server/ directory instead of the example/ directory, ensuring relevant code is scanned.
• Documentation in docs/SMG.md and docs/WORKFLOWS.md is updated to reflect the new scan target for the security scan step. [1] [2]

Documentation cleanup:

• The outdated step to download the frontend build artifact to the static/ directory is removed from the build wheel workflow documentation in docs/WORKFLOWS.md.