CI: Axmol-2.x also requires debian-12+

Author: halx99

.github/workflows/debian.yml

@@ -25,7 +25,7 @@ run-name: 'build@c++${{ inputs.cxxstd || 20 }}'
 
 jobs:
   debian-ogl:
-    runs-on: debian-11
+    runs-on: debian-12
     steps:
     - uses: actions/checkout@v6
 

docs/DevSetup.md

@@ -19,7 +19,7 @@
   5. Ensure that the C / C++ compiler toolset is installed on your host machine.
      - Windows 10+: Visual Studio 2022/2026 with desktop workflow
      - macOS Monterey 12.5+: Xcode 14.2+
-     - Linux(Ubuntu 22.04+, Debian 11+, ArchLinux): GCC (G++)
+     - Linux(Ubuntu 22.04+, Debian 12+, ArchLinux): GCC (G++)
 
 ## Creating a new project