(conan-deps): Update ogre to 1.12.2

What does this MR do?

• Update ogre to patched version 1.12.2
• Match shader input/ouput attribute names in vertex/geometry/fragment shaders.
• Fix varying parsing for the volume proxy bricks shaders.
• Replace the deprecated scene node iterator.
• Remove the debug plugin configuration on windows.
• Explicitly convert quaternions to matrices.
• Fix normal rendering.

How to test it?

• Do a clean build.
• Run OgreViewer.

Additional tests to run

• Windows
• Linux
• macOS

Associated Issues/Merge Requests

• Issues

  • Fixes #375 (closed)
  • Fixes #362 (closed)

• Merge requests

  • depends on conan/conan-ogre!8