DefectDojo risk acceptance sync to DependencyTrack

### Current Behavior:
DependencyTrack syncs the findings to DefectDojo. In DefectDojo there is the possibility to accept a risk for a finding, e.g. if a finding does not apply. These accepted risks are not synced back to DependencyTrack. Thus, the number of vulnerabilities between DefectDojo and DependencyTrack might be different.

### Proposed Behavior:
DependencyTrack syncs the findings to DefectDojo. In DefectDojo there is the possibility to accept a risk for a finding, e.g. if a finding does not apply. It would be nice if DefectDojo and DependencyTrack are always on the same page (e.g. if in DefectDojo a finding was risk accepted) it will be closed in DependencyTrack as "suppressed" with "false positive" and an automatical comment "risk accepted in DefectDojo".