fix: cli can use lowercase for severities (#2565)

pkg/flag/report_flags.go

@@ -220,7 +220,7 @@ func splitSeverity(severity []string) []dbTypes.Severity {
 
 	var severities []dbTypes.Severity
 	for _, s := range severity {
-		sev, err := dbTypes.NewSeverity(s)
+		sev, err := dbTypes.NewSeverity(strings.ToUpper(s))
 		if err != nil {
 			log.Logger.Warnf("unknown severity option: %s", err)
 			continue

pkg/flag/report_flags_test.go

@@ -43,6 +43,18 @@ func TestReportFlagGroup_ToOptions(t *testing.T) {
 				Output: os.Stdout,
 			},
 		},
+		{
+			name: "happy path with a low case severity",
+			fields: fields{
+				severities: "critical",
+			},
+			want: flag.ReportOptions{
+				Output: os.Stdout,
+				Severities: []dbTypes.Severity{
+					dbTypes.SeverityCritical,
+				},
+			},
+		},
 		{
 			name: "happy path with an unknown severity",
 			fields: fields{