internal/ghsa: remove Vulnerability.Severity from query

The GitHub API fails on the Severity field of a particular Security Advisory.
See https://support.github.com/ticket/personal/0/1599280 for details.
Until that is fixed, comment out the Severity field from the query.
That field is a string, so the result will be that some GHSAs in our DB
will have the empty string for their severity. We can always backfill
those later if necessary.

Updates golang/go#52550.

Change-Id: I7df0f8e5cd35a1962cc6ca43c8d9efe1348cc003
Reviewed-on: https://go-review.googlesource.com/c/vulndb/+/402134
Run-TryBot: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
diff --git a/internal/ghsa/ghsa.go b/internal/ghsa/ghsa.go
index 02ccd33..5af39b9 100644
--- a/internal/ghsa/ghsa.go
+++ b/internal/ghsa/ghsa.go
@@ -94,8 +94,11 @@
 							Name      string
 							Ecosystem string
 						}
-						FirstPatchedVersion    struct{ Identifier string }
-						Severity               githubv4.SecurityAdvisorySeverity
+						FirstPatchedVersion struct{ Identifier string }
+						// TODO(https://go.dev/issue/52550): uncomment when
+						// https://support.github.com/ticket/personal/0/1599280
+						// is fixed.
+						//Severity               githubv4.SecurityAdvisorySeverity
 						UpdatedAt              time.Time
 						VulnerableVersionRange string
 					}
@@ -148,8 +151,11 @@
 			}
 			for _, v := range sa.Vulnerabilities.Nodes {
 				s.Vulns = append(s.Vulns, &Vuln{
-					Package:                v.Package.Name,
-					Severity:               v.Severity,
+					Package: v.Package.Name,
+					// TODO(https://go.dev/issue/52550): uncomment when
+					// https://support.github.com/ticket/personal/0/1599280
+					// is fixed.
+					//Severity:               v.Severity,
 					EarliestFixedVersion:   v.FirstPatchedVersion.Identifier,
 					VulnerableVersionRange: v.VulnerableVersionRange,
 					UpdatedAt:              v.UpdatedAt,