ci: add continue-on-error to post-deployment step for CI

[Harmanpreet-Microsoft]

Purpose

This pull request makes the CI pipeline more resilient by allowing failures in the post deployment script to not halt the entire pipeline. The key changes are in the error handling logic for the post deployment step in .github/workflows/CI.yml.

CI/CD Pipeline Resilience:

• Added continue-on-error: true to the "Run Post Deployment Script" step, so failures in this step will not stop the workflow.
• Modified error and exit code handling messages to indicate that failures will not halt the pipeline, replacing exit statements with warnings.
• ...

Does this introduce a breaking change?

• Yes
• No

Golden Path Validation

• I have tested the primary workflows (the "golden path") to ensure they function correctly without errors.

Deployment Validation

• I have validated the deployment process successfully and all services are running as expected with this change.

What to Check

Verify that the following are valid

• ...

Other Information