[STAL-2832] Add committer info to SBOM uploads

[dastrong]

What and why?

This adds the committer name and email to SBOM uploads.

How?

Adding new fields to our payload - by using the git helpers that already pull these values from git

Review checklist

• [ ] Feature or bugfix MUST have appropriate tests (unit, integration)

[datadog-datadog-prod-us1[bot]]

Datadog Report

Branch report: dastrong/STAL-2832 Commit report: e82e70f Test service: datadog-ci-tests

:white_check_mark: 0 Failed, 152 Passed, 0 Skipped, 1m 12.59s Total duration (2m 16.82s time saved)