Created GHA workflow for sca scan

[arnaualcazar]

Adding a Github Action to scan for security vulnerabilities using SCA.
security-scan-branch action builds and scans the selected branch. It outputs the list of vulnerabilities and uploads an artifact with the result. If it detects more than 1 critical or high vulnerability, it returns an error.

security-scan-branch-cron workflow triggers security-scan-branch action once per week.
security-scan-branch-cron workflow triggers security-scan-branch action on every merge to master.

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