Added Trivy Vulnerability scanner for the project

[gkeesh7]

What

• This diff adds a vulnerability scanner trivy to the project with the use of github actions.

Why

• As per the conversation on the PR Remove 3DES from the list of supported ciphers #392 The plan is to setup automated vulnerability scan of the repository on every push and pull request to the master branch.

How

• Uses github actions on every push and pull request to master branch.
• Checks out the repository
• Sets up the trivy scanner from the trivy-actions repository the sha points to the latest release.
• Runs the scan and uploads the report to a file.