build: update dependencies and relax version requirements

- Update Vulkan validation layers to 1.4.304.1
- Update Qt to 6.8.2
- Remove strict version requirements for various dependencies
- Update Vulkan-Headers, VulkanMemoryAllocator, and vcpkg submodules
- Reorganize discord-rpc compile options

This change makes the build system more flexible by removing unnecessary
version constraints while ensuring compatibility with newer versions of
key dependencies.

1 files changed, 0 insertions, 0 deletions

diff --git a/externals/VulkanMemoryAllocator b/externals/VulkanMemoryAllocator
-Subproject 72c309a83bc1997cf9b3d754d694120c65ce109
+Subproject c788c52156f3ef7bc7ab769cb03c110a53ac8fc