Three issues caused the monthly audit to report already-resolved submodules:
1. The audit workflow grepped for "NOASSERTION" anywhere in the output,
matching the Detected column even when the Final column had a valid
override (e.g. libtomcrypt detected as NOASSERTION but overridden to
Unlicense). Changed to grep for "<-- UNRESOLVED" marker instead.
2. Submodules with an explicit NOASSERTION override in license-overrides.yaml
(like libfc-sensor-api, which is proprietary) were still counted as
failures. Now treated as "acknowledged" since someone intentionally
added the override entry.
3. Added missing BSD-3-Clause override for sitl_gazebo-classic (PX4 org
project with no LICENSE file in repo).
Fixes#26932
Signed-off-by: Ramon Roche <mrpollo@gmail.com>
