Update CVE-2025-7207 title and description to say 3.4.0

Author: jasnow

rubies/mruby/CVE-2025-7207.yml

@@ -3,11 +3,11 @@ engine: mruby
 cve: 2025-7207
 ghsa: 48pr-6hvf-39v3
 url: https://nvd.nist.gov/vuln/detail/CVE-2025-7207
-title: Heap-based buffer overflow vulnerability in mruby 3.4.0-rc2
+title: Heap-based buffer overflow vulnerability in mruby 3.4.0
 date: 2025-07-08
 description: |
   A vulnerability, which was classified as problematic, was found
-  in mruby up to 3.4.0-rc2. Affected is the function scope_new of
+  in mruby up to 3.4.0. Affected is the function scope_new of
   the file mrbgems/mruby-compiler/core/codegen.c of the component
   nregs Handler. The manipulation leads to heap-based buffer overflow.
   An attack has to be approached locally. The exploit has been