[STAL-2668] Remove app key requirement

[dastrong]

What and why?

We removed the requirement for an application key to be required to upload an SBOM.

How?

Removes the application key from the code and from the command documentation.

Review checklist

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

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

Datadog Report

Branch report: dastrong/STAL-2668 Commit report: 4f07e25 Test service: datadog-ci-tests

:white_check_mark: 0 Failed, 1416 Passed, 0 Skipped, 1m 22.36s Total duration (2m 5.32s time saved)

[Drarig29]

@dastrong is the CI failing because of a prod deployment that isn't done yet?