feat(oval): support new goval-dictionary model (#1280)

* feat(oval): support new goval-dictionary model

* chore: fix lint err

* chore: set len of slice to 0

* fix(oval): avoid contamination of AffectedPackages by writing directly to defPacks

* fix(oval): avoid contamination of AffectedPackages by writing directly to defPacks

* feat(report): do not add duplicate CveContent

* chore: goval-dictionary update

* chore: go mod tidy

* fix(oval): preload Advisory.Cves for Ubuntu

https://github.com/kotakanbe/goval-dictionary/pull/152

Co-authored-by: Kota Kanbe <kotakanbe@gmail.com>

models/library.go

@@ -106,15 +106,16 @@ func getCveContents(cveID string, vul trivyDBTypes.Vulnerability) (contents map[
 		refs = append(refs, Reference{Source: "trivy", Link: refURL})
 	}
 
-	content := CveContent{
-		Type:          Trivy,
-		CveID:         cveID,
-		Title:         vul.Title,
-		Summary:       vul.Description,
-		Cvss3Severity: string(vul.Severity),
-		References:    refs,
+	contents[Trivy] = []CveContent{
+		{
+			Type:          Trivy,
+			CveID:         cveID,
+			Title:         vul.Title,
+			Summary:       vul.Description,
+			Cvss3Severity: string(vul.Severity),
+			References:    refs,
+		},
 	}
-	contents[Trivy] = append(contents[Trivy], content)
 	return contents
 }