sync script added cvss_v3 line

Author: jasnow

gems/time/CVE-2023-28756.yml

@@ -10,6 +10,7 @@ description: |
   through 3.2.1. The Time parser mishandles invalid URLs that have specific characters.
   It causes an increase in execution time for parsing strings to Time objects. The
   fixed versions are 0.1.1 and 0.2.2.
+cvss_v3: 7.5
 patched_versions:
 - "~> 0.1.1"
 - ">= 0.2.2"