Update the model to match the latest version of the OSV schema (googl…

…e#403)

- Adds "related" field.
- Adds constants for Rocky Linux and AlmaLinux.
- Add new reference types "DETECTION", "DISCUSSION", and "INTRODUCED"

---------

Signed-off-by: Caleb Brown <calebbrown@google.com>

pkg/models/constants.go

@@ -20,6 +20,8 @@ const (
 	EcosystemGitHubActions Ecosystem = "GitHub Actions"
 	EcosystemPub           Ecosystem = "Pub"
 	EcosystemConanCenter   Ecosystem = "ConanCenter"
+	EcosystemRockyLinux    Ecosystem = "Rocky Linux"
+	EcosystemAlmaLinux     Ecosystem = "AlmaLinux"
 )
 
 type SeverityType string
@@ -40,13 +42,16 @@ const (
 type ReferenceType string
 
 const (
-	ReferenceAdvisory ReferenceType = "ADVISORY"
-	ReferenceArticle  ReferenceType = "ARTICLE"
-	ReferenceReport   ReferenceType = "REPORT"
-	ReferenceFix      ReferenceType = "FIX"
-	ReferencePackage  ReferenceType = "PACKAGE"
-	ReferenceEvidence ReferenceType = "EVIDENCE"
-	ReferenceWeb      ReferenceType = "WEB"
+	ReferenceAdvisory   ReferenceType = "ADVISORY"
+	ReferenceArticle    ReferenceType = "ARTICLE"
+	ReferenceDetection  ReferenceType = "DETECTION"
+	ReferenceDiscussion ReferenceType = "DISCUSSION"
+	ReferenceReport     ReferenceType = "REPORT"
+	ReferenceFix        ReferenceType = "FIX"
+	ReferenceIntroduced ReferenceType = "INTRODUCED"
+	ReferencePackage    ReferenceType = "PACKAGE"
+	ReferenceEvidence   ReferenceType = "EVIDENCE"
+	ReferenceWeb        ReferenceType = "WEB"
 )
 
 type CreditType string

pkg/models/vulnerability.go

@@ -90,6 +90,7 @@ type Vulnerability struct {
 	Modified         time.Time              `json:"modified"`
 	Published        time.Time              `json:"published"`
 	Aliases          []string               `json:"aliases,omitempty"`
+	Related          []string               `json:"related,omitempty"`
 	Summary          string                 `json:"summary"`
 	Details          string                 `json:"details"`
 	Affected         []Affected             `json:"affected"`