Bug description
Github SAST Scan uses line as field its hashcode. These alerts in GitHub change lines often, causing duplicate findings to be created for the same alert when re-uploading a scan.

"Github SAST Scan": ["vuln_id_from_tool", "severity", "file_path", "line"]

Link to code.

Steps to reproduce
Steps to reproduce the behavior:

1. Import a test with findings using Github SAST Scan scan type
2. Change the line number on one of the findings
3. Re-upload the test/scan
4. Observe duplicate finding

Expected behavior
The line field should not factor into the hash code, and the alert should only be uploaded once.