deps: Update Vulkan dependencies and remove fmt version constraint

- Update Vulkan-Headers to e43027a (1.4.306)
- Update Vulkan-Utility-Libraries to 8ec8482
- Update vcpkg to 2b8927f
- Remove version constraint for fmt package requirement
- Update VulkanHeaders version requirement to 1.4.306

This updates several external dependencies to their latest versions and
removes the specific version requirement for fmt while maintaining the
REQUIRED flag. The Vulkan-Headers version requirement is updated to match
the new submodule version.

1 files changed, 0 insertions, 0 deletions

diff --git a/externals/Vulkan-Headers b/externals/Vulkan-Headers
-Subproject a03d2f6d5753b365d704d58161825890baad075
+Subproject e43027aa41c4f51b12d79aeae53ff608951c36e