Empty startColumn fields in a SARIF file should be treated as 1, not 0

[josemaia]

Source: https://docs.github.com/en/code-security/codeql-cli/using-the-advanced-functionality-of-the-codeql-cli/sarif-output#region-object

If we compare a file without startColumn in their findings to the one that's uploaded & retrieved (e.g. Checkov Terraform results), findings will not match because the code will compare something like "CKV2_AWS_57;secrets/main.tf;1;1" to "CKV2_AWS_57;secrets/main.tf;1;0".