x/vulndb: fix "fixed" version in GO-2022-0535

Change-Id: I1a4f74f83ee7f1d61765e84ef581d15d022af0e7
Reviewed-on: https://go-review.googlesource.com/c/vulndb/+/421414
Reviewed-by: Julie Qiu <julieqiu@google.com>
diff --git a/reports/GO-2022-0535.yaml b/reports/GO-2022-0535.yaml
index ce47169..43191da 100644
--- a/reports/GO-2022-0535.yaml
+++ b/reports/GO-2022-0535.yaml
@@ -4,7 +4,7 @@
     symbols:
       - Certificate.systemVerify
     versions:
-      - fixed: 1.12.6
+      - fixed: 1.12.16
       - introduced: 1.13.0
         fixed: 1.13.7
     vulnerable_at: 1.13.6