Include UNKNOWN severity in the security vulnerability check (#1315) (#1318)

Signed-off-by: Pavel Macík <[email protected]>

Signed-off-by: Pavel Macík <[email protected]>

Signed-off-by: Pavel Macík <[email protected]>
Co-authored-by: Pavel Macík <[email protected]>

Author: service-binding-operator-bot

.github/workflows/pr-checks.yaml

@@ -534,6 +534,7 @@ jobs:
           format: 'sarif'
           ignore-unfixed: true
           output: 'trivy-results.sarif'
+          severity: CRITICAL,HIGH,UNKNOWN
 
       - name: Upload Trivy scan results to GitHub Security tab
         if: always()