Updated advisory posts against rubysec/ruby-advisory-db@047aefc

Author: postmodern

advisories/_posts/2021-05-02-CVE-2021-31799.md

@@ -18,6 +18,8 @@ advisory:
     run an arbitrary command execution against a user who attempts to run `rdoc`
     command.
   cvss_v3: 7.0
+  unaffected_versions:
+  - "< 3.11.0"
   patched_versions:
   - "~> 6.1.2.1"
   - "~> 6.2.1.1"