Update gemnasium SBOM files to adhere to GitLab CycloneDX Property Taxonomy

Proposal

As explained in this comment, gemnasium currently produces SBOM files with metadata.properties that don't adhere to the GitLab CycloneDX Property Taxonomy:

"metadata": {
  "properties": [
    {
      "name": "gitlab:input_file",
      "value": "yarn.lock"
    },
    {
      "name": "gitlab:package_manager",
      "value": "yarn"
    }
  ]
}

For example, we should replace gitlab:input_file with gitlab:dependency_scanning:input_file from the above metadata.properties block.

The purpose of this issue is to update the metadata.properties of the SBOM files produced by gemnasium to align with the GitLab CycloneDX Property Taxonomy.

/cc @fcatteau @hacks4oats @brytannia @sam.white